# ADI Leak Detection case studies: water mains and supply pipe leaks, part 2 of 3

60 jobs carried out by ADI Leak Detection engineers, taken from ADI's own job records and written as semantic triples, most recently added first. Each job has a heading, a short summary and triples in the form subject | predicate | object. What each predicate means is explained at https://leakdetectionbirmingham.com/case-studies.md

## ADI Leak Detection case study 235: underground water mains leak in Chiswell Green (AL1 3)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an underground water mains leak in Chiswell Green, Hertfordshire (AL1 3), using acoustic correlation, tracer gas, pressure testing and visual inspection. Leak location: under the concrete in front of the garage. Work done: new section of pipework installed with new fittings. Outcome: water meter stationary and a pressure test showed no further leaks.

- ADI case study 235 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 235 | town | Chiswell Green
- ADI case study 235 | postcode sector | AL1 3
- ADI case study 235 | county | Hertfordshire
- ADI case study 235 | country | England
- ADI case study 235 | leak type | Underground water mains leak
- ADI case study 235 | service | Water Mains Leak Detection
- ADI case study 235 | service | Underground Leak Detection
- ADI case study 235 | engineer | Vincent Morgan
- ADI case study 235 | detection method | Acoustic Correlation
- ADI case study 235 | detection method | Tracer Gas
- ADI case study 235 | detection method | Pressure Testing
- ADI case study 235 | detection method | Visual Inspection
- ADI case study 235 | symptom | water meter constantly passing a high volume of water with no water in use
- ADI case study 235 | system affected | underground pipework from the driveway meter, under a side extension, to the kitchen
- ADI case study 235 | test result | tracer gas escaping around the front of the garage
- ADI case study 235 | test result | acoustics confirmed the leak under concrete directly in front of the garage
- ADI case study 235 | leak location | under the concrete in front of the garage
- ADI case study 235 | leak cause | pipework damaged by concrete
- ADI case study 235 | repair | new section of pipework installed with new fittings
- ADI case study 235 | outcome | water meter stationary and a pressure test showed no further leaks
- ADI case study 235 | outcome | area backfilled and the surface levelled with broken concrete

## ADI Leak Detection case study 234: internal cold mains leak in Burpham (GU4 7)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an internal cold mains leak in Burpham, Surrey (GU4 7), using acoustic correlation, tracer gas, a damp meter, an endoscope camera and pressure testing. Leak location: beneath the cupboard floor where the pipework enters the concrete. Work done: new section of 22mm copper pipework installed with new fittings.

- ADI case study 234 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 234 | town | Burpham
- ADI case study 234 | postcode sector | GU4 7
- ADI case study 234 | county | Surrey
- ADI case study 234 | country | England
- ADI case study 234 | leak type | Internal cold mains leak
- ADI case study 234 | service | Water Mains Leak Detection
- ADI case study 234 | service | Internal Leak Detection
- ADI case study 234 | engineer | Vincent Morgan
- ADI case study 234 | detection method | Acoustic Correlation
- ADI case study 234 | detection method | Tracer Gas
- ADI case study 234 | detection method | Damp Meter
- ADI case study 234 | detection method | Endoscope Camera
- ADI case study 234 | detection method | Pressure Testing
- ADI case study 234 | symptom | leaking water heard in a hallway cupboard housing the hot water cylinder
- ADI case study 234 | symptom | external water meter letting water by with no water in use
- ADI case study 234 | system affected | cold water supply pipework
- ADI case study 234 | pipe material | copper
- ADI case study 234 | test result | high damp readings under the hallway and cupboard floor tiling
- ADI case study 234 | test result | tracer gas escaping where pipework goes into the concrete floor in the cupboard
- ADI case study 234 | leak location | beneath the cupboard floor where the pipework enters the concrete
- ADI case study 234 | repair | new section of 22mm copper pipework installed with new fittings

## ADI Leak Detection case study 233: internal cold mains leak in Fordingbridge (BH24 1)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an internal cold mains leak in Fordingbridge, Hampshire (BH24 1), using acoustic correlation, tracer gas, pressure testing and visual inspection. Leak location: beneath the utility room floor. Work done: new section of 15mm pipework installed with new fittings. Outcome: new pipework protected and backfilled to floor level.

- ADI case study 233 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 233 | town | Fordingbridge
- ADI case study 233 | postcode sector | BH24 1
- ADI case study 233 | county | Hampshire
- ADI case study 233 | country | England
- ADI case study 233 | leak type | Internal cold mains leak
- ADI case study 233 | service | Water Mains Leak Detection
- ADI case study 233 | service | Internal Leak Detection
- ADI case study 233 | engineer | Vincent Morgan
- ADI case study 233 | detection method | Acoustic Correlation
- ADI case study 233 | detection method | Tracer Gas
- ADI case study 233 | detection method | Pressure Testing
- ADI case study 233 | detection method | Visual Inspection
- ADI case study 233 | symptom | standing water throughout the utility room on top of the laminate flooring
- ADI case study 233 | symptom | water meter constantly letting water by with no water in use
- ADI case study 233 | system affected | internal cold water supply pipework
- ADI case study 233 | pipe material | copper
- ADI case study 233 | test result | concrete floor below the laminate saturated with water
- ADI case study 233 | test result | pressure testing found a large leak on the internal cold water supply pipework
- ADI case study 233 | test result | tracer gas traced the leak to under the utility room concrete floor
- ADI case study 233 | leak location | beneath the utility room floor
- ADI case study 233 | leak location | on a fitting, with the attached 15mm copper pipe damaged
- ADI case study 233 | access made | laminate flooring removed, damaged as it ran under the skirting boards
- ADI case study 233 | access made | concrete floor removed
- ADI case study 233 | repair | new section of 15mm pipework installed with new fittings
- ADI case study 233 | outcome | new pipework protected and backfilled to floor level

## ADI Leak Detection case study 232: underground water mains leak in Copthorne (RH10 1)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an underground water mains leak in Copthorne, West Sussex (RH10 1), using acoustic correlation, tracer gas, pressure testing and visual inspection. Leak location: beneath the concrete pathway. Work done: new 25mm blue poly pipe installed with new fittings. Outcome: exposed area backfilled.

- ADI case study 232 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 232 | town | Copthorne
- ADI case study 232 | postcode sector | RH10 1
- ADI case study 232 | county | West Sussex
- ADI case study 232 | country | England
- ADI case study 232 | leak type | Underground water mains leak
- ADI case study 232 | service | Water Mains Leak Detection
- ADI case study 232 | service | Underground Leak Detection
- ADI case study 232 | engineer | Vincent Morgan
- ADI case study 232 | detection method | Acoustic Correlation
- ADI case study 232 | detection method | Tracer Gas
- ADI case study 232 | detection method | Pressure Testing
- ADI case study 232 | detection method | Visual Inspection
- ADI case study 232 | symptom | water authority concern over high water usage
- ADI case study 232 | symptom | water meter passing water at a steady rate with no water in use
- ADI case study 232 | system affected | underground pipework between the meter on the communal pathway and the kitchen stopcock
- ADI case study 232 | pipe material | copper
- ADI case study 232 | test result | meter still passing water with the internal stopcock isolated
- ADI case study 232 | test result | pressure testing indicated no internal leaks
- ADI case study 232 | test result | tracer gas located the leak on underground pipework under the concrete pathway
- ADI case study 232 | leak location | beneath the concrete pathway
- ADI case study 232 | leak location | on a damaged section of copper pipework
- ADI case study 232 | access made | part of the concrete path removed to expose the underground pipework
- ADI case study 232 | repair | new 25mm blue poly pipe installed with new fittings
- ADI case study 232 | outcome | exposed area backfilled

## ADI Leak Detection case study 231: internal cold mains leak in Beaconsfield (HP10 0)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an internal cold mains leak in Beaconsfield, Buckinghamshire (HP10 0), using acoustic listening, tracer gas, a damp meter and pressure testing. Leak location: under the fixed fridge, on pipework beneath the concrete floor. Work done: damaged section removed and a new section of 15mm copper installed with new fittings.

- ADI case study 231 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 231 | town | Beaconsfield
- ADI case study 231 | postcode sector | HP10 0
- ADI case study 231 | county | Buckinghamshire
- ADI case study 231 | country | England
- ADI case study 231 | leak type | Internal cold mains leak
- ADI case study 231 | service | Water Mains Leak Detection
- ADI case study 231 | service | Internal Leak Detection
- ADI case study 231 | engineer | Vincent Morgan
- ADI case study 231 | detection method | Acoustic Listening
- ADI case study 231 | detection method | Tracer Gas
- ADI case study 231 | detection method | Damp Meter
- ADI case study 231 | detection method | Pressure Testing
- ADI case study 231 | symptom | water heard constantly running with no appliances in use
- ADI case study 231 | symptom | water damage on a hallway wall and water-stained skirting around the door areas
- ADI case study 231 | system affected | internal cold water supply pipework
- ADI case study 231 | pipe material | copper
- ADI case study 231 | test result | damp in the affected areas and under the laminate flooring
- ADI case study 231 | test result | pressure loss on the internal cold water supply pipework
- ADI case study 231 | test result | running water heard where water pipes go into the concrete floor
- ADI case study 231 | leak location | under the fixed fridge, on pipework beneath the concrete floor
- ADI case study 231 | leak cause | concrete penetrating the copper cold water pipe
- ADI case study 231 | access made | fridge and water-stained lino flooring removed
- ADI case study 231 | access made | concrete removed to access the pipework
- ADI case study 231 | repair | damaged section removed and a new section of 15mm copper installed with new fittings

## ADI Leak Detection case study 230: internal cold mains leak in Buckingham (MK17 0)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an internal cold mains leak in Buckingham, Buckinghamshire (MK17 0), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: beneath the kitchen floor. Work done: new section of 22mm copper pipework soldered in with new fittings.

- ADI case study 230 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 230 | town | Buckingham
- ADI case study 230 | postcode sector | MK17 0
- ADI case study 230 | county | Buckinghamshire
- ADI case study 230 | country | England
- ADI case study 230 | leak type | Internal cold mains leak
- ADI case study 230 | service | Water Mains Leak Detection
- ADI case study 230 | service | Internal Leak Detection
- ADI case study 230 | engineer | Vincent Morgan
- ADI case study 230 | detection method | Acoustic Correlation
- ADI case study 230 | detection method | Thermal Imaging
- ADI case study 230 | detection method | Tracer Gas
- ADI case study 230 | detection method | Damp Meter
- ADI case study 230 | detection method | Pressure Testing
- ADI case study 230 | symptom | water on the kitchen floor and damage to walls
- ADI case study 230 | symptom | visible water damage in the kitchen and lounge
- ADI case study 230 | symptom | water meter constantly passing water with no water in use
- ADI case study 230 | system affected | internal cold water supply pipework
- ADI case study 230 | pipe material | copper
- ADI case study 230 | test result | damp detected under the kitchen and utility tiled floor and the conservatory floor
- ADI case study 230 | test result | pressure testing placed the leak on the internal cold water supply pipework
- ADI case study 230 | test result | tracer gas detected leaking under the kitchen floor
- ADI case study 230 | leak location | beneath the kitchen floor
- ADI case study 230 | leak location | on a damaged section of 22mm copper pipework
- ADI case study 230 | access made | floor tiles removed and concrete dug out
- ADI case study 230 | repair | new section of 22mm copper pipework soldered in with new fittings

## ADI Leak Detection case study 229: underground water mains leak in Great Coates (DN37 0)

Summary: ADI Leak Detection engineer Scott Hardcastle investigated an underground water mains leak in Great Coates, Lincolnshire (DN37 0), using pressure testing, acoustic listening and visual inspection. Leak location: at the external rear wall. Work done: section of copper pipe through the external wall replaced and connected on both sides.

- ADI case study 229 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 229 | town | Great Coates
- ADI case study 229 | postcode sector | DN37 0
- ADI case study 229 | county | Lincolnshire
- ADI case study 229 | country | England
- ADI case study 229 | leak type | Underground water mains leak
- ADI case study 229 | service | Water Mains Leak Detection
- ADI case study 229 | service | Underground Leak Detection
- ADI case study 229 | engineer | Scott Hardcastle
- ADI case study 229 | detection method | Pressure Testing
- ADI case study 229 | detection method | Acoustic Listening
- ADI case study 229 | detection method | Visual Inspection
- ADI case study 229 | property type | large detached property
- ADI case study 229 | symptom | water heard running through the mains pipework
- ADI case study 229 | symptom | running noise stops when the internal stop cock in the garage is turned off
- ADI case study 229 | symptom | combi boiler pressure maintained, no leak on the heating system
- ADI case study 229 | system affected | cold mains pipe through the rear external wall
- ADI case study 229 | pipe material | copper
- ADI case study 229 | test result | compressed air pressure of 2 bar dropped instantly when closed off
- ADI case study 229 | test result | same result with hot and cold to the boiler isolated
- ADI case study 229 | test result | leak heard at the rear where the cold mains goes through the external wall
- ADI case study 229 | leak location | at the external rear wall
- ADI case study 229 | leak cause | split in the 15mm copper pipe
- ADI case study 229 | access made | floor slates removed
- ADI case study 229 | repair | section of copper pipe through the external wall replaced and connected on both sides
- ADI case study 229 | repair | isolation valve added in the garage
- ADI case study 229 | repair | new pipe insulated
- ADI case study 229 | recommendation | lay sand on the exposed external ground and relay the tiles

## ADI Leak Detection case study 227: internal cold mains leak in Holbeach (PE12 9)

Summary: ADI Leak Detection engineer Scott Hardcastle investigated an internal cold mains leak in Holbeach, Lincolnshire (PE12 9), using acoustic correlation, pressure testing, visual inspection and sectional isolation. Leak location: beneath the kitchen floor between the island and the fridge. Work done: split section replaced with a new section of 15mm copper pipe and fittings.

- ADI case study 227 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 227 | town | Holbeach
- ADI case study 227 | postcode sector | PE12 9
- ADI case study 227 | county | Lincolnshire
- ADI case study 227 | country | England
- ADI case study 227 | leak type | Internal cold mains leak
- ADI case study 227 | service | Water Mains Leak Detection
- ADI case study 227 | service | Internal Leak Detection
- ADI case study 227 | engineer | Scott Hardcastle
- ADI case study 227 | detection method | Acoustic Correlation
- ADI case study 227 | detection method | Pressure Testing
- ADI case study 227 | detection method | Visual Inspection
- ADI case study 227 | detection method | Sectional Isolation
- ADI case study 227 | property type | large detached property
- ADI case study 227 | symptom | water coming up from under the kitchen island
- ADI case study 227 | symptom | cold supply to the kitchen and downstairs bathroom capped off by the customer
- ADI case study 227 | system affected | 15mm pipe feeding the fridge
- ADI case study 227 | test result | no external meter movement with the pipework capped and other pipes in use
- ADI case study 227 | test result | pressure dropping on compressed air in the cold pipe feeding kitchen and basin taps
- ADI case study 227 | test result | acoustic noise loudest between the kitchen island and the fridge
- ADI case study 227 | leak location | beneath the kitchen floor between the island and the fridge
- ADI case study 227 | leak cause | split section of 15mm pipe
- ADI case study 227 | access made | 4 or 5 tiles and the concrete underneath removed
- ADI case study 227 | repair | split section replaced with a new section of 15mm copper pipe and fittings
- ADI case study 227 | repair | airing cupboard pipework reconnected with four 22mm push-fit elbows and 22mm copper pipe
- ADI case study 227 | recommendation | let the area dry out before re-screeding
- ADI case study 227 | recommendation | cover the pipes in denso tape before re-screeding

## ADI Leak Detection case study 225: underground water mains leak in Chatteris (CB6 1)

Summary: ADI Leak Detection engineer Scott Hardcastle investigated an underground water mains leak in Chatteris, Cambridgeshire (CB6 1), using tracer gas, pressure testing and visual inspection. Leak location: brass 22mm compression tee wrapped in Denso tape. Work done: tee replaced with an appropriate fitting and the garage pipework reconnected. Outcome: no further movement on the meter after testing.

- ADI case study 225 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 225 | town | Chatteris
- ADI case study 225 | postcode sector | CB6 1
- ADI case study 225 | county | Cambridgeshire
- ADI case study 225 | country | England
- ADI case study 225 | leak type | Underground water mains leak
- ADI case study 225 | service | Water Mains Leak Detection
- ADI case study 225 | service | Underground Leak Detection
- ADI case study 225 | engineer | Scott Hardcastle
- ADI case study 225 | detection method | Tracer Gas
- ADI case study 225 | detection method | Pressure Testing
- ADI case study 225 | detection method | Visual Inspection
- ADI case study 225 | property type | large detached property with a detached garage
- ADI case study 225 | symptom | water loss of approximately 30 litres per hour
- ADI case study 225 | symptom | movement on the external water meter with both stopcocks turned off
- ADI case study 225 | system affected | mains pipework
- ADI case study 225 | test result | tracer gas detected bubbling out of the soil at the front of the property
- ADI case study 225 | test result | one nut on the tee loose and the olive split
- ADI case study 225 | leak location | brass 22mm compression tee wrapped in Denso tape
- ADI case study 225 | leak location | beneath the soil at the front of the property
- ADI case study 225 | leak cause | inappropriate fitting used on the mains pipework
- ADI case study 225 | access made | large hole excavated
- ADI case study 225 | repair | tee replaced with an appropriate fitting and the garage pipework reconnected
- ADI case study 225 | outcome | no further movement on the meter after testing
- ADI case study 225 | outcome | customer considering a new MDPE pipe in the future
- ADI case study 225 | recommendation | possible further inappropriate fittings elsewhere on the pipework

## ADI Leak Detection case study 223: internal cold mains leak in Northampton (NN16 8)

Summary: ADI Leak Detection engineer Scott Hardcastle investigated an internal cold mains leak in Northampton, Northamptonshire (NN16 8), using acoustic listening, a damp meter, pressure testing and visual inspection. Leak location: beneath the basin under the tiled floor. Work done: damaged section of pipe removed and replaced with a new piece of 22mm copper pipe. Outcome: pressure test held following the repair.

- ADI case study 223 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 223 | town | Northampton
- ADI case study 223 | postcode sector | NN16 8
- ADI case study 223 | county | Northamptonshire
- ADI case study 223 | country | England
- ADI case study 223 | leak type | Internal cold mains leak
- ADI case study 223 | service | Water Mains Leak Detection
- ADI case study 223 | service | Internal Leak Detection
- ADI case study 223 | engineer | Scott Hardcastle
- ADI case study 223 | detection method | Acoustic Listening
- ADI case study 223 | detection method | Damp Meter
- ADI case study 223 | detection method | Pressure Testing
- ADI case study 223 | detection method | Visual Inspection
- ADI case study 223 | property type | bungalow
- ADI case study 223 | symptom | leak of 3 litres per hour confirmed by the water company
- ADI case study 223 | symptom | leak confirmed as internal by a previous company
- ADI case study 223 | symptom | combi boiler pressure maintained
- ADI case study 223 | system affected | hot feed
- ADI case study 223 | pipe material | plastic
- ADI case study 223 | test result | slight hissing noise in the bathroom traced to beneath the floor under the basin
- ADI case study 223 | test result | small pressure drop on the hot feed
- ADI case study 223 | leak location | beneath the basin under the tiled floor
- ADI case study 223 | leak location | leaking push-fit coupling barely attached to the pipe
- ADI case study 223 | access made | two tiles removed
- ADI case study 223 | repair | damaged section of pipe removed and replaced with a new piece of 22mm copper pipe
- ADI case study 223 | outcome | pressure test held following the repair
- ADI case study 223 | outcome | basin refitted before leaving the property
- ADI case study 223 | recommendation | reroute the pipes from the loft space if problems occur, as they are screeded over

## ADI Leak Detection case study 221: internal cold mains leak in Mablethorpe (LN12 2)

Summary: ADI Leak Detection engineer Scott Hardcastle investigated an internal cold mains leak in Mablethorpe, Lincolnshire (LN12 2), using acoustic correlation, thermal imaging, tracer gas, pressure testing and sectional isolation. Leak location: under the rear hallway floor, where a previous leak occurred 8 years ago. Work done: pipe repaired with a small section of 15mm copper and fittings. Outcome: no more leaks on the system after the repair was tested.

- ADI case study 221 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 221 | town | Mablethorpe
- ADI case study 221 | postcode sector | LN12 2
- ADI case study 221 | county | Lincolnshire
- ADI case study 221 | country | England
- ADI case study 221 | leak type | Internal cold mains leak
- ADI case study 221 | service | Water Mains Leak Detection
- ADI case study 221 | service | Internal Leak Detection
- ADI case study 221 | engineer | Scott Hardcastle
- ADI case study 221 | detection method | Acoustic Correlation
- ADI case study 221 | detection method | Thermal Imaging
- ADI case study 221 | detection method | Tracer Gas
- ADI case study 221 | detection method | Pressure Testing
- ADI case study 221 | detection method | Sectional Isolation
- ADI case study 221 | property type | detached property
- ADI case study 221 | symptom | leak rate of approximately 20 litres per hour
- ADI case study 221 | symptom | no damp visible anywhere
- ADI case study 221 | symptom | combi boiler pressure intact
- ADI case study 221 | system affected | 15mm hot pipe feeding the basin in the downstairs WC
- ADI case study 221 | test result | external meter moving with the internal stop cock open, still when closed
- ADI case study 221 | test result | no pressure drop with the boiler cold feed isolated, dropping when reopened
- ADI case study 221 | test result | tracer gas coming up through the floor at the rear of the hallway
- ADI case study 221 | leak location | under the rear hallway floor, where a previous leak occurred 8 years ago
- ADI case study 221 | access made | floor broken up
- ADI case study 221 | repair | pipe repaired with a small section of 15mm copper and fittings
- ADI case study 221 | outcome | no more leaks on the system after the repair was tested
- ADI case study 221 | outcome | no movement on the external meter once everything was reinstated
- ADI case study 221 | recommendation | leave the exposed area to dry out, then cover pipes, re-screed and tile
- ADI case study 221 | recommendation | insurance to assess what needs to be done

## ADI Leak Detection case study 220: internal underground mains leak in Rosedale Abbey (YO18 8)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal underground mains leak in Rosedale Abbey, North Yorkshire (YO18 8), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: beneath the floor and ground in the lounge. Work done: repair with two 25mm equal couplers, four 25mm inserts and 25mm blue MDPE pipe.

- ADI case study 220 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 220 | town | Rosedale Abbey
- ADI case study 220 | postcode sector | YO18 8
- ADI case study 220 | county | North Yorkshire
- ADI case study 220 | country | England
- ADI case study 220 | leak type | Internal underground mains leak
- ADI case study 220 | service | Water Mains Leak Detection
- ADI case study 220 | service | Underground Leak Detection
- ADI case study 220 | engineer | Matthew Barron
- ADI case study 220 | detection method | Acoustic Correlation
- ADI case study 220 | detection method | Thermal Imaging
- ADI case study 220 | detection method | Tracer Gas
- ADI case study 220 | detection method | Damp Meter
- ADI case study 220 | detection method | Pressure Testing
- ADI case study 220 | symptom | noise on the pipework in the kitchen
- ADI case study 220 | symptom | water supplier had notified the customer of a leak on the water supply
- ADI case study 220 | system affected | water mains supply pipe
- ADI case study 220 | test result | pressure test on the water mains supply failed
- ADI case study 220 | test result | tracer gas detected in the lounge
- ADI case study 220 | test result | water movement found acoustically in the lounge
- ADI case study 220 | leak location | beneath the floor and ground in the lounge
- ADI case study 220 | access made | floor and ground in the lounge excavated
- ADI case study 220 | repair | repair with two 25mm equal couplers, four 25mm inserts and 25mm blue MDPE pipe
- ADI case study 220 | recommendation | full replacement of the main water supply line, as incoming pressure exceeds pipework capacity
- ADI case study 220 | recommendation | reroute the new line via the downstairs bathroom plumbing and cap the original entry point
- ADI case study 220 | recommendation | repair all damage to the lounge floor

## ADI Leak Detection case study 219: internal cold mains leak in Stoke-on-Trent (ST3 4)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal cold mains leak in Stoke-on-Trent, Staffordshire (ST3 4), using thermal imaging, tracer gas, a damp meter, an endoscope camera, pressure testing, leak dye and visual inspection. Leak location: in the kitchen wall. Work done: copper pipe repaired with two 15mm speed fit couplings and 15mm plastic pipe.

- ADI case study 219 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 219 | town | Stoke-on-Trent
- ADI case study 219 | postcode sector | ST3 4
- ADI case study 219 | county | Staffordshire
- ADI case study 219 | country | England
- ADI case study 219 | leak type | Internal cold mains leak
- ADI case study 219 | service | Water Mains Leak Detection
- ADI case study 219 | service | Internal Leak Detection
- ADI case study 219 | engineer | Matthew Barron
- ADI case study 219 | detection method | Thermal Imaging
- ADI case study 219 | detection method | Tracer Gas
- ADI case study 219 | detection method | Damp Meter
- ADI case study 219 | detection method | Endoscope Camera
- ADI case study 219 | detection method | Pressure Testing
- ADI case study 219 | detection method | Leak Dye
- ADI case study 219 | detection method | Visual Inspection
- ADI case study 219 | symptom | water damage to the bedroom wall and the kitchen wall and ceiling
- ADI case study 219 | symptom | no drop in boiler pressure
- ADI case study 219 | system affected | internal pipework
- ADI case study 219 | pipe material | copper
- ADI case study 219 | test result | pressure test on the internal pipework failed
- ADI case study 219 | test result | tracer gas detected in the upstairs bathroom by the toilet
- ADI case study 219 | test result | no dye water found, suggesting no leaks on the bathroom waste pipes above
- ADI case study 219 | leak location | in the kitchen wall
- ADI case study 219 | access made | access made to the kitchen wall
- ADI case study 219 | repair | copper pipe repaired with two 15mm speed fit couplings and 15mm plastic pipe
- ADI case study 219 | recommendation | drying and restoration programme for the water damaged walls
- ADI case study 219 | recommendation | repair all damage made to the boxing

## ADI Leak Detection case study 218: underground water mains leak in Wakefield (WF1 2)

Summary: ADI Leak Detection engineer Matthew Barron investigated an underground water mains leak in Wakefield, West Yorkshire (WF1 2), using pressure testing, tracer gas, acoustic correlation and visual inspection. Leak location: on the lead pipe at the point where it was filled to cap it off. Work done: repair with 25mm MDPE pipe, 20-27mm x 25mm universal coupling and 25mm end cap.

- ADI case study 218 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 218 | town | Wakefield
- ADI case study 218 | postcode sector | WF1 2
- ADI case study 218 | county | West Yorkshire
- ADI case study 218 | country | England
- ADI case study 218 | leak type | Underground water mains leak
- ADI case study 218 | service | Water Mains Leak Detection
- ADI case study 218 | service | Underground Leak Detection
- ADI case study 218 | engineer | Matthew Barron
- ADI case study 218 | detection method | Pressure Testing
- ADI case study 218 | detection method | Tracer Gas
- ADI case study 218 | detection method | Acoustic Correlation
- ADI case study 218 | detection method | Visual Inspection
- ADI case study 218 | symptom | water streaming out of the wall by the back patio area
- ADI case study 218 | symptom | no loss of pressure on the boiler
- ADI case study 218 | system affected | external water mains pipework
- ADI case study 218 | pipe material | lead
- ADI case study 218 | test result | internal pipework held 4.4 bar for 20 minutes with no drop
- ADI case study 218 | test result | pressure test on the external water mains pipework failed
- ADI case study 218 | test result | tracer gas detected in multiple areas on the patio
- ADI case study 218 | leak location | on the lead pipe at the point where it was filled to cap it off
- ADI case study 218 | leak location | under the concrete patio
- ADI case study 218 | access made | section of the concrete patio excavated
- ADI case study 218 | repair | repair with 25mm MDPE pipe, 20-27mm x 25mm universal coupling and 25mm end cap
- ADI case study 218 | recommendation | allow 1-2 weeks for the ground to settle before repairing the concrete patio

## ADI Leak Detection case study 217: underground water mains leak in Liverpool (L25 0)

Summary: ADI Leak Detection engineer Matthew Barron investigated an underground water mains leak in Liverpool, Merseyside (L25 0), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: at the internal stop cock. Work done: copper rings and internal stop cock replaced with new ones. Outcome: post-repair pressure test held 2.4 bar for 20 minutes with no drop.

- ADI case study 217 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 217 | town | Liverpool
- ADI case study 217 | postcode sector | L25 0
- ADI case study 217 | county | Merseyside
- ADI case study 217 | country | England
- ADI case study 217 | leak type | Underground water mains leak
- ADI case study 217 | service | Water Mains Leak Detection
- ADI case study 217 | service | Underground Leak Detection
- ADI case study 217 | engineer | Matthew Barron
- ADI case study 217 | detection method | Acoustic Correlation
- ADI case study 217 | detection method | Thermal Imaging
- ADI case study 217 | detection method | Tracer Gas
- ADI case study 217 | detection method | Damp Meter
- ADI case study 217 | detection method | Pressure Testing
- ADI case study 217 | symptom | water damage shown on arrival
- ADI case study 217 | system affected | internal pipework
- ADI case study 217 | test result | pressure test at 2.4 bar for 15 minutes dropped to 1.4 bar
- ADI case study 217 | test result | tracer gas detected at the kitchen mixer and the internal stop cock
- ADI case study 217 | test result | with the kitchen mixer isolated, tracer gas detected at the internal stop cock
- ADI case study 217 | leak location | at the internal stop cock
- ADI case study 217 | leak cause | fitting overtightened by a previous plumber, which crimped the ring incorrectly
- ADI case study 217 | repair | copper rings and internal stop cock replaced with new ones
- ADI case study 217 | outcome | post-repair pressure test held 2.4 bar for 20 minutes with no drop
- ADI case study 217 | outcome | stop cock now holding, but engineer unsure it will hold long term
- ADI case study 217 | recommendation | replace the mains supply, an old lead sleeve with copper pipe
- ADI case study 217 | recommendation | drying and restoration contractor for the laundry room floor due to high moisture readings
- ADI case study 217 | recommendation | repair the boxing that hides the pipework

## ADI Leak Detection case study 216: internal cold mains leak in Bolton (BL2 2)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal cold mains leak in Bolton, Greater Manchester (BL2 2), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: beneath the flooring in the corner of the lounge area. Work done: copper pipe cut out and replaced with 15mm plastic pipe. Outcome: repair carried out and the pipework pressure tested.

- ADI case study 216 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 216 | town | Bolton
- ADI case study 216 | postcode sector | BL2 2
- ADI case study 216 | county | Greater Manchester
- ADI case study 216 | country | England
- ADI case study 216 | leak type | Internal cold mains leak
- ADI case study 216 | service | Water Mains Leak Detection
- ADI case study 216 | service | Underground Leak Detection
- ADI case study 216 | engineer | Matthew Barron
- ADI case study 216 | detection method | Acoustic Correlation
- ADI case study 216 | detection method | Thermal Imaging
- ADI case study 216 | detection method | Tracer Gas
- ADI case study 216 | detection method | Damp Meter
- ADI case study 216 | detection method | Pressure Testing
- ADI case study 216 | symptom | leak on the mains water supply reported by the customer
- ADI case study 216 | symptom | no drop in boiler pressure reported
- ADI case study 216 | system affected | mains water supply pipe
- ADI case study 216 | pipe material | copper
- ADI case study 216 | test result | high moisture levels in the lounge floor and the garage floor
- ADI case study 216 | test result | tracer gas detected in the garage
- ADI case study 216 | test result | water movement found acoustically in the garage and at the back of the lounge
- ADI case study 216 | leak location | beneath the flooring in the corner of the lounge area
- ADI case study 216 | access made | carpet and flooring lifted in the corner of the lounge area
- ADI case study 216 | repair | copper pipe cut out and replaced with 15mm plastic pipe
- ADI case study 216 | repair | new pipe joined to the copper with a 15mm brass compression fitting
- ADI case study 216 | outcome | repair carried out and the pipework pressure tested
- ADI case study 216 | recommendation | drying and restoration programme for the water damaged wooden flooring

## ADI Leak Detection case study 215: internal cold mains leak in Faringdon (SN7 7)

Summary: ADI Leak Detection engineer Kyle Storkey investigated an internal cold mains leak in Faringdon, Oxfordshire (SN7 7), using acoustic correlation, thermal imaging, a damp meter, visual inspection and sectional isolation. Leak location: two leaks on the water pipework in the concrete slab area. Work done: both leaks repaired with 15mm plastic pipe and fittings.

- ADI case study 215 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 215 | town | Faringdon
- ADI case study 215 | postcode sector | SN7 7
- ADI case study 215 | county | Oxfordshire
- ADI case study 215 | country | England
- ADI case study 215 | leak type | Internal cold mains leak
- ADI case study 215 | service | Water Mains Leak Detection
- ADI case study 215 | service | Internal Leak Detection
- ADI case study 215 | engineer | Kyle Storkey
- ADI case study 215 | detection method | Acoustic Correlation
- ADI case study 215 | detection method | Thermal Imaging
- ADI case study 215 | detection method | Damp Meter
- ADI case study 215 | detection method | Visual Inspection
- ADI case study 215 | detection method | Sectional Isolation
- ADI case study 215 | symptom | water staining on the concrete slab in the utility room
- ADI case study 215 | symptom | movement on the water meter
- ADI case study 215 | symptom | water pooling below the utility room sink where a previous repair had been made
- ADI case study 215 | system affected | cold water pipe
- ADI case study 215 | system affected | hot water pipe
- ADI case study 215 | test result | no pressure drop on the combination boiler, reading 1.1 bar
- ADI case study 215 | test result | audible evidence of a leak source from the acoustic survey
- ADI case study 215 | test result | anomaly found with thermal imaging
- ADI case study 215 | leak location | two leaks on the water pipework in the concrete slab area
- ADI case study 215 | access made | floor cupboards, counter and sink area in the utility room removed
- ADI case study 215 | access made | access made to the concrete slab area
- ADI case study 215 | repair | both leaks repaired with 15mm plastic pipe and fittings
- ADI case study 215 | repair | plastic used as customer is looking to replace pipes with three leaks in one metre
- ADI case study 215 | recommendation | strip out the water damaged areas
- ADI case study 215 | recommendation | install a drying programme once stripped out
- ADI case study 215 | recommendation | reinstatement and redecorating once a drying certificate is issued

## ADI Leak Detection case study 210: underground water mains leak in Bursledon (SO31 8)

Summary: ADI Leak Detection engineer Kyle Storkey investigated an underground water mains leak in Bursledon, Hampshire (SO31 8), using acoustic correlation, tracer gas, pressure testing and sectional isolation. Leak location: black poly pipe under the hedge near the water meter. Work done: repaired with 20mm MDPE fittings and pipework.

- ADI case study 210 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 210 | town | Bursledon
- ADI case study 210 | postcode sector | SO31 8
- ADI case study 210 | county | Hampshire
- ADI case study 210 | country | England
- ADI case study 210 | leak type | Underground water mains leak
- ADI case study 210 | service | Water Mains Leak Detection
- ADI case study 210 | service | Underground Leak Detection
- ADI case study 210 | engineer | Kyle Storkey
- ADI case study 210 | detection method | Acoustic Correlation
- ADI case study 210 | detection method | Tracer Gas
- ADI case study 210 | detection method | Pressure Testing
- ADI case study 210 | detection method | Sectional Isolation
- ADI case study 210 | symptom | consistent movement on the external water meter
- ADI case study 210 | system affected | external water mains supply
- ADI case study 210 | pipe material | black poly
- ADI case study 210 | test result | meter still moving with the internal stopcock isolated, indicating an external mains leak
- ADI case study 210 | test result | consistent pressure drop with the system at 2 bar
- ADI case study 210 | test result | strong tracer gas presence in the hedge area near the water meter
- ADI case study 210 | leak location | black poly pipe under the hedge near the water meter
- ADI case study 210 | access made | hedge removed and soil excavated
- ADI case study 210 | repair | repaired with 20mm MDPE fittings and pipework
- ADI case study 210 | recommendation | tell the water company the leak has been located and repaired
- ADI case study 210 | recommendation | keep monitoring the water meter for any further fluctuations

## ADI Leak Detection case study 207: underground water mains leak in Gloucester (GL4 4)

Summary: ADI Leak Detection engineer James Bexter investigated an underground water mains leak in Gloucester, Gloucestershire (GL4 4), using acoustic listening, visual inspection and pressure testing. Leak location: water mains pipe in the same area as a previous repair. Work done: damaged section of pipe cut out and replaced. Outcome: pipework passed testing after the repair.

- ADI case study 207 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 207 | town | Gloucester
- ADI case study 207 | postcode sector | GL4 4
- ADI case study 207 | county | Gloucestershire
- ADI case study 207 | country | England
- ADI case study 207 | leak type | Underground water mains leak
- ADI case study 207 | service | Water Mains Leak Detection
- ADI case study 207 | service | Underground Leak Detection
- ADI case study 207 | engineer | James Bexter
- ADI case study 207 | detection method | Acoustic Listening
- ADI case study 207 | detection method | Visual Inspection
- ADI case study 207 | detection method | Pressure Testing
- ADI case study 207 | property type | detached 1960s property
- ADI case study 207 | symptom | water meter kept spinning with the internal stopcock isolated
- ADI case study 207 | system affected | incoming water mains
- ADI case study 207 | test result | previous repair in the same area found intact and not leaking
- ADI case study 207 | leak location | water mains pipe in the same area as a previous repair
- ADI case study 207 | access made | ground excavated to expose the water mains pipe
- ADI case study 207 | repair | damaged section of pipe cut out and replaced
- ADI case study 207 | repair | previous repair incorporated into the replacement to reduce the number of joints
- ADI case study 207 | outcome | pipework passed testing after the repair

## ADI Leak Detection case study 205: underground water mains leak in Padstow (PL27 7)

Summary: ADI Leak Detection engineer James Bexter investigated an underground water mains leak in Padstow, Cornwall (PL27 7), using acoustic correlation, tracer gas, pressure testing, sectional isolation and visual inspection. Leak location: further down the side of the house, about 2 metres from the first excavation. Work done: leaking section replaced with blue MDPE using specialist fittings for the non-standard pipe size.

- ADI case study 205 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 205 | town | Padstow
- ADI case study 205 | postcode sector | PL27 7
- ADI case study 205 | county | Cornwall
- ADI case study 205 | country | England
- ADI case study 205 | leak type | Underground water mains leak
- ADI case study 205 | service | Water Mains Leak Detection
- ADI case study 205 | service | Underground Leak Detection
- ADI case study 205 | engineer | James Bexter
- ADI case study 205 | detection method | Acoustic Correlation
- ADI case study 205 | detection method | Tracer Gas
- ADI case study 205 | detection method | Pressure Testing
- ADI case study 205 | detection method | Sectional Isolation
- ADI case study 205 | detection method | Visual Inspection
- ADI case study 205 | property type | house
- ADI case study 205 | symptom | estimated leak rate of about 1 litre per minute
- ADI case study 205 | system affected | external mains supply, which also feeds two garden taps before the internal stopcock
- ADI case study 205 | system affected | mains pipe of non-standard size
- ADI case study 205 | test result | stopcock isolation test placed the leak on the external mains pipework
- ADI case study 205 | test result | nothing significant detected by acoustics around the property
- ADI case study 205 | test result | tracer gas at 2 bar detected near the internal stopcock at the rear
- ADI case study 205 | leak location | further down the side of the house, about 2 metres from the first excavation
- ADI case study 205 | access made | exploratory excavation near the point of entry, where no leak was found
- ADI case study 205 | access made | area exposed and the leak visually confirmed
- ADI case study 205 | repair | leaking section replaced with blue MDPE using specialist fittings for the non-standard pipe size
- ADI case study 205 | recommendation | dig the pipe down to a minimum depth of 750 mm for frost protection

## ADI Leak Detection case study 200: underground water mains leak in Carlisle (CA5 6)

Summary: ADI Leak Detection engineer Hamaad Janjua investigated an underground water mains leak in Carlisle, Cumbria (CA5 6), using acoustic correlation, pressure testing, tracer gas and visual inspection. Leak location: buried pipework at the rear of the property. Work done: damaged section of pipe cut back and a new section installed. Outcome: retest accuracy limited as two troughs had no isolation valves.

- ADI case study 200 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 200 | town | Carlisle
- ADI case study 200 | postcode sector | CA5 6
- ADI case study 200 | county | Cumbria
- ADI case study 200 | country | England
- ADI case study 200 | leak type | Underground water mains leak
- ADI case study 200 | service | Water Mains Leak Detection
- ADI case study 200 | service | Underground Leak Detection
- ADI case study 200 | engineer | Hamaad Janjua
- ADI case study 200 | detection method | Acoustic Correlation
- ADI case study 200 | detection method | Pressure Testing
- ADI case study 200 | detection method | Tracer Gas
- ADI case study 200 | detection method | Visual Inspection
- ADI case study 200 | property type | property on a farm
- ADI case study 200 | symptom | water meter keeps spinning with the stopcock isolated
- ADI case study 200 | symptom | no surface signs of a leak such as pooling water or damp ground
- ADI case study 200 | system affected | external mains supply
- ADI case study 200 | test result | acoustic survey gave no clear results
- ADI case study 200 | test result | pressure test gave a positive gas result at the rear of the property
- ADI case study 200 | test result | one trough on the farm found to be passing
- ADI case study 200 | leak location | buried pipework at the rear of the property
- ADI case study 200 | leak cause | installation fault
- ADI case study 200 | access made | area excavated with the customer assisting using a digger
- ADI case study 200 | repair | damaged section of pipe cut back and a new section installed
- ADI case study 200 | outcome | retest accuracy limited as two troughs had no isolation valves
- ADI case study 200 | recommendation | have both troughs inspected and replace the ball valves if necessary
- ADI case study 200 | recommendation | install isolation valves on each trough

## ADI Leak Detection case study 199: internal cold mains leak in Dumbarton (G83 0)

Summary: ADI Leak Detection engineer Hamaad Janjua investigated an internal cold mains leak in Dumbarton, Dunbartonshire (G83 0), using acoustic correlation, thermal imaging, tracer gas, a damp meter, an endoscope camera, visual inspection and sectional isolation. Leak location: apparent stop valve and capped-off waste pipe under the hallway floorboards. Work done: pipework cut back and new fittings installed. Outcome: only a visual retest possible due to lack of access, found leak free.

- ADI case study 199 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 199 | town | Dumbarton
- ADI case study 199 | postcode sector | G83 0
- ADI case study 199 | county | Dunbartonshire
- ADI case study 199 | country | Scotland
- ADI case study 199 | leak type | Internal cold mains leak
- ADI case study 199 | service | Water Mains Leak Detection
- ADI case study 199 | service | Internal Leak Detection
- ADI case study 199 | engineer | Hamaad Janjua
- ADI case study 199 | detection method | Acoustic Correlation
- ADI case study 199 | detection method | Thermal Imaging
- ADI case study 199 | detection method | Tracer Gas
- ADI case study 199 | detection method | Damp Meter
- ADI case study 199 | detection method | Endoscope Camera
- ADI case study 199 | detection method | Visual Inspection
- ADI case study 199 | detection method | Sectional Isolation
- ADI case study 199 | property type | property in a block of eight
- ADI case study 199 | symptom | constant drip into the hallway of the property below
- ADI case study 199 | system affected | dead-leg section of pipework in the hallway
- ADI case study 199 | test result | internal mains tested and passed
- ADI case study 199 | test result | small weep on cold pipe beneath the boiler, not enough to explain the leak
- ADI case study 199 | test result | high moisture reading in the hallway directly above the drip below
- ADI case study 199 | leak location | apparent stop valve and capped-off waste pipe under the hallway floorboards
- ADI case study 199 | access made | floorboards lifted
- ADI case study 199 | repair | pipework cut back and new fittings installed
- ADI case study 199 | outcome | only a visual retest possible due to lack of access, found leak free
- ADI case study 199 | recommendation | cut back and cap the dead-leg section and redundant waste pipework
- ADI case study 199 | recommendation | fix the minor weep behind the boiler and the washing machine faults
- ADI case study 199 | recommendation | install a single main stop valve to isolate the full water supply

## ADI Leak Detection case study 198: internal cold mains leak in Kilmarnock (KA17 0)

Summary: ADI Leak Detection engineer Hamaad Janjua investigated an internal cold mains leak in Kilmarnock, Ayrshire (KA17 0), using pressure testing, thermal imaging, a damp meter, an endoscope camera and acoustic correlation. Leak location: beneath the bath. Work done: pipework cut back and new fittings installed. Outcome: retest completed after the repair.

- ADI case study 198 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 198 | town | Kilmarnock
- ADI case study 198 | postcode sector | KA17 0
- ADI case study 198 | county | Ayrshire
- ADI case study 198 | country | Scotland
- ADI case study 198 | leak type | Internal cold mains leak
- ADI case study 198 | service | Water Mains Leak Detection
- ADI case study 198 | service | Internal Leak Detection
- ADI case study 198 | engineer | Hamaad Janjua
- ADI case study 198 | detection method | Pressure Testing
- ADI case study 198 | detection method | Thermal Imaging
- ADI case study 198 | detection method | Damp Meter
- ADI case study 198 | detection method | Endoscope Camera
- ADI case study 198 | detection method | Acoustic Correlation
- ADI case study 198 | property type | upstairs property in a two-storey building
- ADI case study 198 | symptom | leak appearing in the hall of the downstairs property
- ADI case study 198 | pipe material | copper
- ADI case study 198 | test result | pressure test failed on the hot supply pipe, all other tests passed
- ADI case study 198 | test result | wet moisture readings beneath the bath, visible moisture confirmed by endoscope camera
- ADI case study 198 | test result | thermal imaging identified a wet patch
- ADI case study 198 | leak location | beneath the bath
- ADI case study 198 | leak cause | hairline crack in a copper pipe
- ADI case study 198 | access made | several floorboards lifted
- ADI case study 198 | repair | pipework cut back and new fittings installed
- ADI case study 198 | repair | isolation valve added to the cold mains pipe
- ADI case study 198 | outcome | retest completed after the repair
- ADI case study 198 | recommendation | upgrade the toilet pipework, which is in very poor condition with corrosion
- ADI case study 198 | recommendation | upgrade the waste pipes, which are in bad condition

## ADI Leak Detection case study 192: underground water mains leak in Cambourne (SG19 1)

Summary: ADI Leak Detection engineer Grant Corney investigated an underground water mains leak in Cambourne, Bedfordshire (SG19 1), using pressure testing, tracer gas and acoustic correlation. Leak location: plastic tee fitting and steel pipe at the first outside tap. Work done: steel standpipe removed, fittings changed and a new plastic tap brought up. Outcome: second leak still needs exposing and repairing.

- ADI case study 192 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 192 | town | Cambourne
- ADI case study 192 | postcode sector | SG19 1
- ADI case study 192 | county | Bedfordshire
- ADI case study 192 | country | England
- ADI case study 192 | leak type | Underground water mains leak
- ADI case study 192 | service | Water Mains Leak Detection
- ADI case study 192 | service | Underground Leak Detection
- ADI case study 192 | engineer | Grant Corney
- ADI case study 192 | detection method | Pressure Testing
- ADI case study 192 | detection method | Tracer Gas
- ADI case study 192 | detection method | Acoustic Correlation
- ADI case study 192 | symptom | meter stops completely when the allotment isolation in the plant room is closed
- ADI case study 192 | system affected | roughly 1 mile of water mains serving greenhouses, a house and 15 allotments
- ADI case study 192 | pipe material | steel
- ADI case study 192 | test result | allotment pipework dropped from four bar to 0 bar within two minutes
- ADI case study 192 | test result | tracer gas readings at the first outside tap on the left of the allotments
- ADI case study 192 | test result | pressure still dropping and meter still going round after the first repair
- ADI case study 192 | leak location | plastic tee fitting and steel pipe at the first outside tap
- ADI case study 192 | leak location | second leak on another outside tap in the middle of the rear allotments
- ADI case study 192 | leak cause | bolt missing from the steel pipe
- ADI case study 192 | access made | area around the first outside tap exposed
- ADI case study 192 | repair | steel standpipe removed, fittings changed and a new plastic tap brought up
- ADI case study 192 | repair | fittings from 32mm to 20mm used with plastic pipe and a new outside tap
- ADI case study 192 | outcome | second leak still needs exposing and repairing
- ADI case study 192 | outcome | customer will carry out the remaining repair works
- ADI case study 192 | recommendation | replace the fittings with Philmac fittings

## ADI Leak Detection case study 191: underground water mains leak in Downham Market (PE33 9)

Summary: ADI Leak Detection engineer Grant Corney investigated an underground water mains leak in Downham Market, Norfolk (PE33 9), using pressure testing, tracer gas, acoustic correlation and visual inspection. Leak location: fitting where the pipe was reduced from 25mm to 20mm. Work done: leaking pipework and fittings cut out and replaced with 25mm blue poly pipe. Outcome: pressure held on retest with no further issues.

- ADI case study 191 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 191 | town | Downham Market
- ADI case study 191 | postcode sector | PE33 9
- ADI case study 191 | county | Norfolk
- ADI case study 191 | country | England
- ADI case study 191 | leak type | Underground water mains leak
- ADI case study 191 | service | Water Mains Leak Detection
- ADI case study 191 | service | Underground Leak Detection
- ADI case study 191 | engineer | Grant Corney
- ADI case study 191 | detection method | Pressure Testing
- ADI case study 191 | detection method | Tracer Gas
- ADI case study 191 | detection method | Acoustic Correlation
- ADI case study 191 | detection method | Visual Inspection
- ADI case study 191 | symptom | meter continuously going round with nothing being used
- ADI case study 191 | symptom | no visible leaks on the pipework inside the barn
- ADI case study 191 | system affected | water mains supply feeding the barn
- ADI case study 191 | system affected | supply running down to the back fields and back, over 200 m long
- ADI case study 191 | test result | pressure dropped within two minutes at 4 bar
- ADI case study 191 | test result | tracer gas detected near where the supply rises to the outside tap
- ADI case study 191 | leak location | fitting where the pipe was reduced from 25mm to 20mm
- ADI case study 191 | access made | area excavated, uncovering a T piece with one end capped off
- ADI case study 191 | repair | leaking pipework and fittings cut out and replaced with 25mm blue poly pipe
- ADI case study 191 | outcome | pressure held on retest with no further issues
- ADI case study 191 | recommendation | run a new feed of about 30 m from the meter to the barn

## ADI Leak Detection case study 190: underground water mains leak in Cricklade (SN2 1)

Summary: ADI Leak Detection engineer Gabor Weber investigated an underground water mains leak in Cricklade, Wiltshire (SN2 1), using acoustic correlation, a damp meter, pressure testing and visual inspection. Leak location: rusty steel pipe under the hallway tiles and concrete floor. Work done: leaking section replaced with new MDPE pipe and UTC couplings. Outcome: pipework passed a 20 minute retest at 4 bar.

- ADI case study 190 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 190 | town | Cricklade
- ADI case study 190 | postcode sector | SN2 1
- ADI case study 190 | county | Wiltshire
- ADI case study 190 | country | England
- ADI case study 190 | leak type | Underground water mains leak
- ADI case study 190 | service | Water Mains Leak Detection
- ADI case study 190 | service | Underground Leak Detection
- ADI case study 190 | engineer | Gabor Weber
- ADI case study 190 | detection method | Acoustic Correlation
- ADI case study 190 | detection method | Damp Meter
- ADI case study 190 | detection method | Pressure Testing
- ADI case study 190 | detection method | Visual Inspection
- ADI case study 190 | property type | house
- ADI case study 190 | symptom | water appearing in the hallway of the neighbouring house
- ADI case study 190 | system affected | shared external mains pipework feeding two houses
- ADI case study 190 | pipe material | steel
- ADI case study 190 | test result | external mains pressure test failed
- ADI case study 190 | test result | acoustic anomaly and high damp readings on the hallway floor and wall
- ADI case study 190 | test result | retest after the first repair failed
- ADI case study 190 | leak location | rusty steel pipe under the hallway tiles and concrete floor
- ADI case study 190 | leak location | three more leaks on the same pipework
- ADI case study 190 | access made | hallway tiles and concrete flooring exposed
- ADI case study 190 | access made | digging continued through the hallway and outside to sound pipe
- ADI case study 190 | repair | leaking section replaced with new MDPE pipe and UTC couplings
- ADI case study 190 | repair | 25mm MDPE pipe with inserts and UTC couplings used
- ADI case study 190 | outcome | pipework passed a 20 minute retest at 4 bar
- ADI case study 190 | outcome | no guarantee given for this pipework
- ADI case study 190 | recommendation | replace the whole external mains pipework because of its condition

## ADI Leak Detection case study 189: internal toilet leak in Dorchester (DT9 6)

Summary: ADI Leak Detection engineer Gabor Weber investigated an internal toilet leak in Dorchester, Dorset (DT9 6), using pressure testing, a damp meter, an endoscope camera and tracer gas. Leak location: toilet on the other side of the damp utility kitchen wall. Work done: leaking flexible pan connector replaced. Outcome: replacement flexible pan connector passed testing.

- ADI case study 189 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 189 | town | Dorchester
- ADI case study 189 | postcode sector | DT9 6
- ADI case study 189 | county | Dorset
- ADI case study 189 | country | England
- ADI case study 189 | leak type | Internal toilet leak
- ADI case study 189 | service | Water Mains Leak Detection
- ADI case study 189 | service | Internal Leak Detection
- ADI case study 189 | engineer | Gabor Weber
- ADI case study 189 | detection method | Pressure Testing
- ADI case study 189 | detection method | Damp Meter
- ADI case study 189 | detection method | Endoscope Camera
- ADI case study 189 | detection method | Tracer Gas
- ADI case study 189 | symptom | damp utility kitchen walls
- ADI case study 189 | symptom | earlier damp proof survey found no problem with the DPC
- ADI case study 189 | system affected | flexible pipe to the toilet
- ADI case study 189 | test result | cold feed pressure test passed
- ADI case study 189 | test result | external mains pipework pressure test passed
- ADI case study 189 | test result | hot feed pressure test passed
- ADI case study 189 | leak location | toilet on the other side of the damp utility kitchen wall
- ADI case study 189 | leak location | behind the toilet back panel
- ADI case study 189 | leak cause | many holes in the flexible pipe
- ADI case study 189 | access made | silicone seal cut and toilet back panel removed
- ADI case study 189 | repair | leaking flexible pan connector replaced
- ADI case study 189 | outcome | replacement flexible pan connector passed testing
- ADI case study 189 | recommendation | send the report to the insurance company

## ADI Leak Detection case study 186: internal cold mains leak in Bradwell (NR31 6)

Summary: ADI Leak Detection engineer Ferenc Gulyas investigated an internal cold mains leak in Bradwell, Norfolk (NR31 6), using acoustic correlation, tracer gas, a damp meter and pressure testing. Leak location: in the kitchen doorway from the utility room. Work done: two redundant pipework runs isolated and capped. Outcome: all active cold and hot water pipework passed a retest.

- ADI case study 186 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 186 | town | Bradwell
- ADI case study 186 | postcode sector | NR31 6
- ADI case study 186 | county | Norfolk
- ADI case study 186 | country | England
- ADI case study 186 | leak type | Internal cold mains leak
- ADI case study 186 | service | Water Mains Leak Detection
- ADI case study 186 | service | Internal Leak Detection
- ADI case study 186 | engineer | Ferenc Gulyas
- ADI case study 186 | detection method | Acoustic Correlation
- ADI case study 186 | detection method | Tracer Gas
- ADI case study 186 | detection method | Damp Meter
- ADI case study 186 | detection method | Pressure Testing
- ADI case study 186 | symptom | damp area in the kitchen doorway with water damage to the kitchen skirting
- ADI case study 186 | symptom | wet concrete subfloor under vinyl flooring already removed by the customer
- ADI case study 186 | symptom | pressurised heating system had not lost any pressure
- ADI case study 186 | system affected | cold main supplying the utility sink, front outside tap, downstairs toilet and softener
- ADI case study 186 | test result | cold main pipework pressure test indicated a leak
- ADI case study 186 | test result | hot water pipework passed its pressure test
- ADI case study 186 | test result | tracer gas located the leak in the kitchen doorway from the utility room
- ADI case study 186 | leak location | in the kitchen doorway from the utility room
- ADI case study 186 | repair | two redundant pipework runs isolated and capped
- ADI case study 186 | repair | 15mm isolation valves used
- ADI case study 186 | outcome | all active cold and hot water pipework passed a retest
- ADI case study 186 | outcome | external main passed a pressure test, with street water pressure at 2.6 bar
- ADI case study 186 | recommendation | keep running a dehumidifier in the kitchen to dry the damp area
- ADI case study 186 | recommendation | monitor the area for any further signs of dampness

## ADI Leak Detection case study 185: underground water mains leak in Ipswich (IP3 8)

Summary: ADI Leak Detection engineer Ferenc Gulyas investigated an underground water mains leak in Ipswich, Suffolk (IP3 8), using tracer gas, pressure testing, flow metering and visual inspection. Leak location: previous repair point beneath the driveway paving blocks. Work done: faulty fitting replaced with new Philmac UTC couplings. Outcome: retest and final water meter check on all pipework passed.

- ADI case study 185 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 185 | town | Ipswich
- ADI case study 185 | postcode sector | IP3 8
- ADI case study 185 | county | Suffolk
- ADI case study 185 | country | England
- ADI case study 185 | leak type | Underground water mains leak
- ADI case study 185 | service | Water Mains Leak Detection
- ADI case study 185 | service | Underground Leak Detection
- ADI case study 185 | engineer | Ferenc Gulyas
- ADI case study 185 | detection method | Tracer Gas
- ADI case study 185 | detection method | Pressure Testing
- ADI case study 185 | detection method | Flow Metering
- ADI case study 185 | detection method | Visual Inspection
- ADI case study 185 | symptom | no visible evidence of the leak on arrival
- ADI case study 185 | pipe material | lead
- ADI case study 185 | test result | water meter moved with the internal stopcock closed
- ADI case study 185 | test result | pressure test connected at the internal stopcock confirmed a leak
- ADI case study 185 | test result | tracer gas emanating from the driveway, suggesting a leak beyond the brick wall
- ADI case study 185 | leak location | previous repair point beneath the driveway paving blocks
- ADI case study 185 | leak cause | Philmac UTC coupling leaking as the lead pipework was not correctly seated
- ADI case study 185 | access made | suspended floor exposed, revealing lead pipework
- ADI case study 185 | access made | driveway paving blocks exposed and ground excavated
- ADI case study 185 | repair | faulty fitting replaced with new Philmac UTC couplings
- ADI case study 185 | outcome | retest and final water meter check on all pipework passed
- ADI case study 185 | outcome | inside area restored and outside excavation backfilled

## ADI Leak Detection case study 184: underground water mains leak in Sheffield (S9 1)

Summary: ADI Leak Detection engineer Brett Steele investigated an underground water mains leak in Sheffield, South Yorkshire (S9 1), using acoustic correlation, tracer gas, pressure testing and flow metering. Leak location: transition fitting reducing 25mm MDPE to 15mm copper. Work done: transition fitting re-seated and tightened. Outcome: pressure test showed no further loss and no uncontrolled usage at the meter.

- ADI case study 184 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 184 | town | Sheffield
- ADI case study 184 | postcode sector | S9 1
- ADI case study 184 | county | South Yorkshire
- ADI case study 184 | country | England
- ADI case study 184 | leak type | Underground water mains leak
- ADI case study 184 | service | Water Mains Leak Detection
- ADI case study 184 | service | Underground Leak Detection
- ADI case study 184 | engineer | Brett Steele
- ADI case study 184 | detection method | Acoustic Correlation
- ADI case study 184 | detection method | Tracer Gas
- ADI case study 184 | detection method | Pressure Testing
- ADI case study 184 | detection method | Flow Metering
- ADI case study 184 | symptom | suspected leak causing elevated water consumption
- ADI case study 184 | pipe material | MDPE
- ADI case study 184 | test result | constant meter usage with internal stop cock isolated, 1 litre in just over 30 seconds
- ADI case study 184 | test result | high tracer gas readings in the front garden near the driveway edge
- ADI case study 184 | test result | pressure test after reseating the first fitting showed further issues
- ADI case study 184 | leak location | transition fitting reducing 25mm MDPE to 15mm copper
- ADI case study 184 | leak location | under the driveway
- ADI case study 184 | leak cause | small crack that had formed in the MDPE pipe
- ADI case study 184 | access made | trial excavation in the grassed area
- ADI case study 184 | repair | transition fitting re-seated and tightened
- ADI case study 184 | repair | cracked section removed and repaired using a 25mm MDPE coupler
- ADI case study 184 | outcome | pressure test showed no further loss and no uncontrolled usage at the meter
- ADI case study 184 | recommendation | protect the pipe with soft sand before backfilling and making good

## ADI Leak Detection case study 183: underground water mains leak in Nottingham (NG7 4)

Summary: ADI Leak Detection engineer Brett Steele investigated an underground water mains leak in Nottingham, Nottinghamshire (NG7 4), using acoustic correlation, tracer gas, pressure testing and flow metering. Leak location: more or less below the drain. Work done: leak section cut out and replaced with new pipe and fittings. Outcome: testing proved the supply sound after the repair.

- ADI case study 183 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 183 | town | Nottingham
- ADI case study 183 | postcode sector | NG7 4
- ADI case study 183 | county | Nottinghamshire
- ADI case study 183 | country | England
- ADI case study 183 | leak type | Underground water mains leak
- ADI case study 183 | service | Water Mains Leak Detection
- ADI case study 183 | service | Underground Leak Detection
- ADI case study 183 | engineer | Brett Steele
- ADI case study 183 | detection method | Acoustic Correlation
- ADI case study 183 | detection method | Tracer Gas
- ADI case study 183 | detection method | Pressure Testing
- ADI case study 183 | detection method | Flow Metering
- ADI case study 183 | property type | work units
- ADI case study 183 | symptom | utility bill spike suggesting usage of around 2000 litres per hour
- ADI case study 183 | symptom | no signs of water damage found
- ADI case study 183 | system affected | mains feeding two work units with only a toilet and two basins
- ADI case study 183 | system affected | supply pipe that had become distorted and flattened out
- ADI case study 183 | test result | meter recorded uncontrolled usage of 1 litre per second
- ADI case study 183 | test result | high tracer gas levels around the drain covers close to the meter
- ADI case study 183 | test result | acoustic area of concern below the cobbles near the drain and unit wall
- ADI case study 183 | leak location | more or less below the drain
- ADI case study 183 | access made | excavation carried out around the area of concern
- ADI case study 183 | repair | leak section cut out and replaced with new pipe and fittings
- ADI case study 183 | repair | 25mm MDPE fitted using specialist transition couplers and inserts
- ADI case study 183 | outcome | testing proved the supply sound after the repair
- ADI case study 183 | outcome | no guarantee against further issues given the supply pipe condition
- ADI case study 183 | recommendation | repipe the supply if further leaks are found, as the removed section was brittle

## ADI Leak Detection case study 182: internal cold mains leak in Great Ayton (TS9 6)

Summary: ADI Leak Detection engineer Brett Steele investigated an internal cold mains leak in Great Ayton, North Yorkshire (TS9 6), using acoustic correlation, tracer gas, a damp meter, pressure testing and flow metering. Leak location: beneath the kitchen unit adjacent to the sink. Work done: affected section replaced with flexible push-fit piping due to the restrictive pipe layout. Outcome: pressure test with four bar tracer gas showed no loss.

- ADI case study 182 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 182 | town | Great Ayton
- ADI case study 182 | postcode sector | TS9 6
- ADI case study 182 | county | North Yorkshire
- ADI case study 182 | country | England
- ADI case study 182 | leak type | Internal cold mains leak
- ADI case study 182 | service | Water Mains Leak Detection
- ADI case study 182 | service | Internal Leak Detection
- ADI case study 182 | engineer | Brett Steele
- ADI case study 182 | detection method | Acoustic Correlation
- ADI case study 182 | detection method | Tracer Gas
- ADI case study 182 | detection method | Damp Meter
- ADI case study 182 | detection method | Pressure Testing
- ADI case study 182 | detection method | Flow Metering
- ADI case study 182 | symptom | water penetrating the rear wall of the property
- ADI case study 182 | symptom | recent utility bills showing a pattern of high water consumption
- ADI case study 182 | symptom | water damage around the internal stopcock on new plasterwork
- ADI case study 182 | pipe material | copper
- ADI case study 182 | test result | meter recorded uncontrolled usage of one litre every one and a half minutes
- ADI case study 182 | test result | usage stopped when the internal stopcock was isolated
- ADI case study 182 | test result | elevated gas readings beneath a kitchen unit adjacent to the sink
- ADI case study 182 | leak location | beneath the kitchen unit adjacent to the sink
- ADI case study 182 | leak cause | significant corrosion, possibly from friction against unprotected copper pipework
- ADI case study 182 | access made | kitchen unit and floor screed removed
- ADI case study 182 | repair | affected section replaced with flexible push-fit piping due to the restrictive pipe layout
- ADI case study 182 | outcome | pressure test with four bar tracer gas showed no loss
- ADI case study 182 | outcome | no further usage recorded on the water meter
- ADI case study 182 | recommendation | keep repaired area accessible as fittings should not be encased in screed or concrete
- ADI case study 182 | recommendation | full drying procedure on all water-damaged areas, possibly lifting more kitchen flooring

## ADI Leak Detection case study 181: internal cold mains leak in Leeds (LS16 7)

Summary: ADI Leak Detection engineer Brett Steele investigated an internal cold mains leak in Leeds, West Yorkshire (LS16 7), using acoustic correlation, tracer gas, a borescope, pressure testing, flow metering and a ground microphone. Leak location: beneath the utility room floor. Work done: damaged section removed and supply reconnected with a 15mm push fit coupler. Outcome: all supplies held pressure and the internal meter showed no further uncontrolled usage.

- ADI case study 181 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 181 | town | Leeds
- ADI case study 181 | postcode sector | LS16 7
- ADI case study 181 | county | West Yorkshire
- ADI case study 181 | country | England
- ADI case study 181 | leak type | Internal cold mains leak
- ADI case study 181 | service | Water Mains Leak Detection
- ADI case study 181 | service | Internal Leak Detection
- ADI case study 181 | engineer | Brett Steele
- ADI case study 181 | detection method | Acoustic Correlation
- ADI case study 181 | detection method | Tracer Gas
- ADI case study 181 | detection method | Borescope
- ADI case study 181 | detection method | Pressure Testing
- ADI case study 181 | detection method | Flow Metering
- ADI case study 181 | detection method | Ground Microphone
- ADI case study 181 | symptom | unusually high water consumption following a spike in utility bills
- ADI case study 181 | symptom | internal meter beneath the kitchen units showed continuous usage with no known demand
- ADI case study 181 | symptom | no visible signs of water damage
- ADI case study 181 | system affected | cold feed
- ADI case study 181 | test result | uncontrolled consumption of approximately 0.3 litres over one minute
- ADI case study 181 | test result | usage continued with the hot supply isolated, placing the issue on the cold supply
- ADI case study 181 | test result | elevated gas readings around the washing machine cold feed in the utility room
- ADI case study 181 | leak location | beneath the utility room floor
- ADI case study 181 | leak cause | puncture in the cold feed
- ADI case study 181 | access made | floor tiles lifted
- ADI case study 181 | repair | damaged section removed and supply reconnected with a 15mm push fit coupler
- ADI case study 181 | outcome | all supplies held pressure and the internal meter showed no further uncontrolled usage
- ADI case study 181 | outcome | foundations beneath the utility floor saturated with pockets of standing water
- ADI case study 181 | recommendation | allow the area to dry fully before any reinstatement works
- ADI case study 181 | recommendation | use dehumidifiers and heaters to speed up drying

## ADI Leak Detection case study 180: underground water mains leak in Collingham (LS22 4)

Summary: ADI Leak Detection engineer Brett Steele investigated an underground water mains leak in Collingham, West Yorkshire (LS22 4), using acoustic correlation, tracer gas and pressure testing. Leak location: beneath the lawn adjacent to the garden house. Work done: leak section repaired with a specialist 27-34mm transition coupler. Outcome: supply pressure tested with tracer gas at 4 bar showed no loss.

- ADI case study 180 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 180 | town | Collingham
- ADI case study 180 | postcode sector | LS22 4
- ADI case study 180 | county | West Yorkshire
- ADI case study 180 | country | England
- ADI case study 180 | leak type | Underground water mains leak
- ADI case study 180 | service | Water Mains Leak Detection
- ADI case study 180 | service | Underground Leak Detection
- ADI case study 180 | engineer | Brett Steele
- ADI case study 180 | detection method | Acoustic Correlation
- ADI case study 180 | detection method | Tracer Gas
- ADI case study 180 | detection method | Pressure Testing
- ADI case study 180 | symptom | issues began around the time large marquees were erected in the neighbouring garden
- ADI case study 180 | system affected | mains supply thought to run through the neighbouring garden
- ADI case study 180 | test result | suspect leak noise on the hard standing by the garden house
- ADI case study 180 | test result | high tracer gas readings from under the lawn next to the hard standing
- ADI case study 180 | test result | gas mixed with the mains produced an audible leak noise in the same area
- ADI case study 180 | leak location | beneath the lawn adjacent to the garden house
- ADI case study 180 | leak location | mains supply found below electric cables and a gas supply
- ADI case study 180 | leak cause | puncture hole in the mains supply
- ADI case study 180 | access made | excavation works carried out
- ADI case study 180 | repair | leak section repaired with a specialist 27-34mm transition coupler
- ADI case study 180 | outcome | supply pressure tested with tracer gas at 4 bar showed no loss
- ADI case study 180 | outcome | excavation backfilled

## ADI Leak Detection case study 179: underground water mains leak in Shipston on Stour (CV36 4)

Summary: ADI Leak Detection engineer Adam Regan investigated an underground water mains leak in Shipston on Stour, Warwickshire (CV36 4), using acoustic correlation, pressure testing and visual inspection. Leak location: incoming main where it runs through the wall and behind the drain. Work done: semi permanent repair on the 25mm MDPE using a Philmac repair coupling and pipe supports. Outcome: repair only semi permanent because the pipework is too shallow.

- ADI case study 179 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 179 | town | Shipston on Stour
- ADI case study 179 | postcode sector | CV36 4
- ADI case study 179 | county | Warwickshire
- ADI case study 179 | country | England
- ADI case study 179 | leak type | Underground water mains leak
- ADI case study 179 | service | Water Mains Leak Detection
- ADI case study 179 | service | Underground Leak Detection
- ADI case study 179 | engineer | Adam Regan
- ADI case study 179 | detection method | Acoustic Correlation
- ADI case study 179 | detection method | Pressure Testing
- ADI case study 179 | detection method | Visual Inspection
- ADI case study 179 | symptom | significant water leak estimated at approximately 1000 litres per day
- ADI case study 179 | system affected | 25mm blue MDPE incoming main supply entering the kitchen beneath the units
- ADI case study 179 | pipe material | MDPE
- ADI case study 179 | test result | acoustic anomaly outside the kitchen beneath the patio near the drain
- ADI case study 179 | test result | pressure testing with acoustics intensified the anomaly at the same location
- ADI case study 179 | leak location | incoming main where it runs through the wall and behind the drain
- ADI case study 179 | access made | area around the drain excavated
- ADI case study 179 | repair | semi permanent repair on the 25mm MDPE using a Philmac repair coupling and pipe supports
- ADI case study 179 | outcome | repair only semi permanent because the pipework is too shallow
- ADI case study 179 | recommendation | replace and re-lay the main supply at least 750mm deep before entering the property

## ADI Leak Detection case study 178: underground water mains leak in Chinnor (OX39 4)

Summary: ADI Leak Detection engineer Adam Regan investigated an underground water mains leak in Chinnor, Oxfordshire (OX39 4), using acoustic correlation, visual inspection and sectional isolation. Leak location: beneath the floor at the door threshold. Work done: repair made with plastic fittings and pipework so water could be restored to the bar. Outcome: repair classed as temporary as plastic fittings and pipework were used.

- ADI case study 178 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 178 | town | Chinnor
- ADI case study 178 | postcode sector | OX39 4
- ADI case study 178 | county | Oxfordshire
- ADI case study 178 | country | England
- ADI case study 178 | leak type | Underground water mains leak
- ADI case study 178 | service | Water Mains Leak Detection
- ADI case study 178 | service | Underground Leak Detection
- ADI case study 178 | engineer | Adam Regan
- ADI case study 178 | detection method | Acoustic Correlation
- ADI case study 178 | detection method | Visual Inspection
- ADI case study 178 | detection method | Sectional Isolation
- ADI case study 178 | property type | pub
- ADI case study 178 | symptom | wet area next to the bar and at the kitchen entrance
- ADI case study 178 | symptom | water on the floor at the door threshold, very wet under the mat
- ADI case study 178 | system affected | copper pipe going into the ground
- ADI case study 178 | pipe material | copper
- ADI case study 178 | test result | plastic chamber meter showed no movement, supplying the right hand toilets and basin
- ADI case study 178 | test result | acoustic anomaly detected from the copper pipe going into the ground
- ADI case study 178 | test result | acoustic anomalies disappeared once the stop cock was unseized and shut off
- ADI case study 178 | leak location | beneath the floor at the door threshold
- ADI case study 178 | leak location | squashed section of pipe with a hole
- ADI case study 178 | leak cause | copper pipe apparently damaged during past drain work
- ADI case study 178 | leak cause | tough concrete mix half encasing the pipe caused more damage
- ADI case study 178 | access made | ground exposed
- ADI case study 178 | repair | repair made with plastic fittings and pipework so water could be restored to the bar
- ADI case study 178 | repair | repaired pipework sleeved and protected
- ADI case study 178 | outcome | repair classed as temporary as plastic fittings and pipework were used
- ADI case study 178 | outcome | sleeved repair should be fine as a permanent repair
- ADI case study 178 | recommendation | pour liquid DPM below the repair, then cover pipework and duct with soft mortar
- ADI case study 178 | recommendation | if not wanted under the floor, run the pipework on the surface around the door
- ADI case study 178 | recommendation | otherwise that area of the pub would need all pipe removed from under the floor

## ADI Leak Detection case study 177: underground water mains leak in Brackley (NN13 6)

Summary: ADI Leak Detection engineer Adam Regan investigated an underground water mains leak in Brackley, Northamptonshire (NN13 6), using acoustic correlation, tracer gas, visual inspection and sectional isolation. Leak location: underneath the exposed steel pipework. Work done: leaking steel section cut out and cleaned up at both ends.

- ADI case study 177 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 177 | town | Brackley
- ADI case study 177 | postcode sector | NN13 6
- ADI case study 177 | county | Northamptonshire
- ADI case study 177 | country | England
- ADI case study 177 | leak type | Underground water mains leak
- ADI case study 177 | service | Water Mains Leak Detection
- ADI case study 177 | service | Underground Leak Detection
- ADI case study 177 | engineer | Adam Regan
- ADI case study 177 | detection method | Acoustic Correlation
- ADI case study 177 | detection method | Tracer Gas
- ADI case study 177 | detection method | Visual Inspection
- ADI case study 177 | detection method | Sectional Isolation
- ADI case study 177 | symptom | small amount of water around the road stopcock head, possibly from the gland nut
- ADI case study 177 | symptom | stop valve failed and letting by, so water could not be fully shut off
- ADI case study 177 | pipe material | steel
- ADI case study 177 | test result | acoustic anomalies in the area around 2 metres from the drain cover
- ADI case study 177 | leak location | underneath the exposed steel pipework
- ADI case study 177 | leak cause | steel pipe corroded through in two locations, otherwise in good condition
- ADI case study 177 | access made | concrete broken out and the ground exposed
- ADI case study 177 | repair | leaking steel section cut out and cleaned up at both ends
- ADI case study 177 | repair | repaired using specialist UTC repair fittings and 25mm MDPE

## ADI Leak Detection case study 163: internal cold mains leak in Walthamstow (E4 6)

Summary: ADI Leak Detection engineer Vincent Morgan investigated an internal cold mains leak in Walthamstow, Greater London (E4 6), using thermal imaging, tracer gas, acoustic correlation, a damp meter and visual inspection. Leak location: beneath the kitchen unit and concrete floor. Work done: damaged tee joint replaced with a new section of pipework and new fittings.

- ADI case study 163 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 163 | town | Walthamstow
- ADI case study 163 | postcode sector | E4 6
- ADI case study 163 | county | Greater London
- ADI case study 163 | country | England
- ADI case study 163 | leak type | Internal cold mains leak
- ADI case study 163 | service | Water Mains Leak Detection
- ADI case study 163 | service | Internal Leak Detection
- ADI case study 163 | engineer | Vincent Morgan
- ADI case study 163 | detection method | Thermal Imaging
- ADI case study 163 | detection method | Tracer Gas
- ADI case study 163 | detection method | Acoustic Correlation
- ADI case study 163 | detection method | Damp Meter
- ADI case study 163 | detection method | Visual Inspection
- ADI case study 163 | symptom | high water bill
- ADI case study 163 | symptom | water damage to the skirting board and carpet in the lounge
- ADI case study 163 | symptom | water running beneath the suspended floor from the wall between lounge and kitchen
- ADI case study 163 | system affected | hot water supply pipework
- ADI case study 163 | test result | thermal imaging showed leaking pipework beneath the kitchen unit and concrete floor
- ADI case study 163 | test result | strong tracer gas indication directly under the kitchen unit
- ADI case study 163 | test result | acoustic testing confirmed the suspected leak area
- ADI case study 163 | leak location | beneath the kitchen unit and concrete floor
- ADI case study 163 | leak cause | damaged tee joint
- ADI case study 163 | access made | base of the kitchen unit cut away and concrete floor beneath exposed
- ADI case study 163 | repair | damaged tee joint replaced with a new section of pipework and new fittings
- ADI case study 163 | recommendation | reinstate the kitchen unit base and concrete floor
- ADI case study 163 | recommendation | a builder may be needed for the remedial works
- ADI case study 163 | recommendation | monitor the pipework in this area for future issues

## ADI Leak Detection case study 150: internal cold mains leak in Telford (TF7 5)

Summary: ADI Leak Detection engineer Phillip Whitehouse investigated an internal cold mains leak in Telford, Shropshire (TF7 5), using acoustic correlation, tracer gas, pressure testing, a borescope and visual inspection. Leak location: on the cold feed beneath floorboards with a damp patch. Work done: 8 inches of holed copper cut out and replaced using 2 pressfit couplings. Outcome: floorboards and carpet refitted.

- ADI case study 150 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 150 | town | Telford
- ADI case study 150 | postcode sector | TF7 5
- ADI case study 150 | county | Shropshire
- ADI case study 150 | country | England
- ADI case study 150 | leak type | Internal cold mains leak
- ADI case study 150 | service | Water Mains Leak Detection
- ADI case study 150 | service | Internal Leak Detection
- ADI case study 150 | engineer | Phillip Whitehouse
- ADI case study 150 | detection method | Acoustic Correlation
- ADI case study 150 | detection method | Tracer Gas
- ADI case study 150 | detection method | Pressure Testing
- ADI case study 150 | detection method | Borescope
- ADI case study 150 | detection method | Visual Inspection
- ADI case study 150 | property type | detached house
- ADI case study 150 | symptom | damp patch on the living room ceiling and wall
- ADI case study 150 | system affected | cold feed
- ADI case study 150 | pipe material | copper
- ADI case study 150 | test result | cold mains pressurised to 1.5 bar dropped 0.1 bar after 15 minutes
- ADI case study 150 | test result | pressure kept falling with the heating and then hot water systems isolated
- ADI case study 150 | test result | tracer gas method failed due to the leak rate
- ADI case study 150 | leak location | on the cold feed beneath floorboards with a damp patch
- ADI case study 150 | leak cause | pinhole in the cold feed pipe
- ADI case study 150 | access made | carpet lifted and floorboards removed
- ADI case study 150 | repair | 8 inches of holed copper cut out and replaced using 2 pressfit couplings
- ADI case study 150 | outcome | floorboards and carpet refitted

## ADI Leak Detection case study 144: underfloor mains leak in Sheffield (S11 9)

Summary: ADI Leak Detection engineer Phillip Whitehouse investigated an underfloor mains leak in Sheffield, South Yorkshire (S11 9), using acoustic correlation, tracer gas, pressure testing and acoustic listening. Leak location: beneath the floor at the rear of the house. Work done: lead main capped using a leadlock fitting with a 15mm cap. Outcome: leak repaired.

- ADI case study 144 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 144 | town | Sheffield
- ADI case study 144 | postcode sector | S11 9
- ADI case study 144 | county | South Yorkshire
- ADI case study 144 | country | England
- ADI case study 144 | leak type | Underfloor mains leak
- ADI case study 144 | service | Water Mains Leak Detection
- ADI case study 144 | service | Underground Leak Detection
- ADI case study 144 | engineer | Phillip Whitehouse
- ADI case study 144 | detection method | Acoustic Correlation
- ADI case study 144 | detection method | Tracer Gas
- ADI case study 144 | detection method | Pressure Testing
- ADI case study 144 | detection method | Acoustic Listening
- ADI case study 144 | property type | detached house
- ADI case study 144 | symptom | customer informed of a suspected leak
- ADI case study 144 | system affected | older lead mains pipe
- ADI case study 144 | pipe material | lead
- ADI case study 144 | test result | meter test showed no pressure drop on the mains supply leading to the house
- ADI case study 144 | test result | pressure test from the outside tap lost 0.5 bar over 90 seconds
- ADI case study 144 | test result | tracer gas readings at the rear of the house
- ADI case study 144 | leak location | beneath the floor at the rear of the house
- ADI case study 144 | access made | two floorboards cut and approximately 12 inches square of concrete removed
- ADI case study 144 | repair | lead main capped using a leadlock fitting with a 15mm cap
- ADI case study 144 | outcome | leak repaired
- ADI case study 144 | recommendation | leave the flooring open for a period so the concrete dries out
- ADI case study 144 | recommendation | contact the water supplier about potential refunds on water bills

## ADI Leak Detection case study 143: underground water mains leak in Mottram St. Andrew (SK9 7)

Summary: ADI Leak Detection engineer Phillip Whitehouse investigated an underground water mains leak in Mottram St. Andrew, Cheshire (SK9 7), using acoustic correlation, tracer gas, an endoscope camera, pressure testing and visual inspection. Leak location: beside the external water meter. Work done: defective fitting removed and replaced with a new one. Outcome: repair pressure tested and confirmed sound.

- ADI case study 143 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 143 | town | Mottram St. Andrew
- ADI case study 143 | postcode sector | SK9 7
- ADI case study 143 | county | Cheshire
- ADI case study 143 | country | England
- ADI case study 143 | leak type | Underground water mains leak
- ADI case study 143 | service | Water Mains Leak Detection
- ADI case study 143 | service | Underground Leak Detection
- ADI case study 143 | engineer | Phillip Whitehouse
- ADI case study 143 | detection method | Acoustic Correlation
- ADI case study 143 | detection method | Tracer Gas
- ADI case study 143 | detection method | Endoscope Camera
- ADI case study 143 | detection method | Pressure Testing
- ADI case study 143 | detection method | Visual Inspection
- ADI case study 143 | property type | detached house
- ADI case study 143 | test result | pressure test confirmed a pressure loss, identical to the previous visit
- ADI case study 143 | test result | high tracer gas readings directly beside the external meter
- ADI case study 143 | test result | acoustic testing confirmed the same spot beside the external meter
- ADI case study 143 | leak location | beside the external water meter
- ADI case study 143 | leak cause | incorrectly installed fitting was badly cross-threaded and snapped at the thread
- ADI case study 143 | access made | ground excavated beside the external meter
- ADI case study 143 | repair | defective fitting removed and replaced with a new one
- ADI case study 143 | repair | 25mm to 22mm reducing coupler used
- ADI case study 143 | outcome | repair pressure tested and confirmed sound
- ADI case study 143 | outcome | excavation backfilled
- ADI case study 143 | recommendation | contact the water board as the fault originated from their installation

## ADI Leak Detection case study 142: underground water mains leak in Liverpool (L25 6)

Summary: ADI Leak Detection engineer Matthew Barron investigated an underground water mains leak in Liverpool, Merseyside (L25 6), using acoustic correlation, tracer gas, a damp meter, visual inspection and pressure testing. Leak location: beneath the concrete floor of the garage. Work done: temporary repair made with plastic fittings and pipe. Outcome: repair is temporary as the copper pipe is in poor condition.

- ADI case study 142 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 142 | town | Liverpool
- ADI case study 142 | postcode sector | L25 6
- ADI case study 142 | county | Merseyside
- ADI case study 142 | country | England
- ADI case study 142 | leak type | Underground water mains leak
- ADI case study 142 | service | Water Mains Leak Detection
- ADI case study 142 | service | Underground Leak Detection
- ADI case study 142 | engineer | Matthew Barron
- ADI case study 142 | detection method | Acoustic Correlation
- ADI case study 142 | detection method | Tracer Gas
- ADI case study 142 | detection method | Damp Meter
- ADI case study 142 | detection method | Visual Inspection
- ADI case study 142 | detection method | Pressure Testing
- ADI case study 142 | symptom | water supply company notice of a leak on the property
- ADI case study 142 | symptom | water damage to the garage walls and adjacent kitchen wall
- ADI case study 142 | symptom | internal stop cock would not isolate, water still running through
- ADI case study 142 | system affected | branch from the main copper pipe to the garage tap
- ADI case study 142 | pipe material | copper
- ADI case study 142 | test result | major movement on the external meter micro dial
- ADI case study 142 | test result | tracer gas detected in the garage
- ADI case study 142 | test result | acoustic check found water movement in the garage
- ADI case study 142 | leak location | beneath the concrete floor of the garage
- ADI case study 142 | leak cause | branch from the main copper pipe to the garage tap had snapped off
- ADI case study 142 | access made | concrete floor and ground in the garage excavated
- ADI case study 142 | repair | temporary repair made with plastic fittings and pipe
- ADI case study 142 | outcome | repair is temporary as the copper pipe is in poor condition
- ADI case study 142 | recommendation | replace the 15mm copper mains pipe with 25mm MDPE blue plastic pipe
- ADI case study 142 | recommendation | replace the internal stop cock as it cannot isolate
- ADI case study 142 | recommendation | let the ground settle before repairing the garage concrete floor

## ADI Leak Detection case study 137: internal cold mains leak in Menston (LS29 6)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal cold mains leak in Menston, West Yorkshire (LS29 6), using acoustic correlation, tracer gas, a damp meter, pressure testing and visual inspection. Leak location: pipework feeding the teacher desk tap, buried in concrete. Work done: teacher desk tap supply capped with a 15mm compression fitting stop end cap. Outcome: capped supply held 3.0 bar for 30 minutes with no pressure drop.

- ADI case study 137 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 137 | town | Menston
- ADI case study 137 | postcode sector | LS29 6
- ADI case study 137 | county | West Yorkshire
- ADI case study 137 | country | England
- ADI case study 137 | leak type | Internal cold mains leak
- ADI case study 137 | service | Water Mains Leak Detection
- ADI case study 137 | service | Internal Leak Detection
- ADI case study 137 | customer type | School / Commercial Property
- ADI case study 137 | engineer | Matthew Barron
- ADI case study 137 | detection method | Acoustic Correlation
- ADI case study 137 | detection method | Tracer Gas
- ADI case study 137 | detection method | Damp Meter
- ADI case study 137 | detection method | Pressure Testing
- ADI case study 137 | detection method | Visual Inspection
- ADI case study 137 | property type | school
- ADI case study 137 | symptom | notice of a leak received for the property
- ADI case study 137 | symptom | hissing noise in one of the classrooms
- ADI case study 137 | symptom | water saturating the field area closest to the classroom with the hissing noise
- ADI case study 137 | system affected | pipework supplying only the teacher desk tap
- ADI case study 137 | test result | external mains meter timed at 1 litre every 5 seconds
- ADI case study 137 | test result | limited meter movement once the supply to that part of the building was isolated
- ADI case study 137 | test result | tracer gas detected in the classroom with the hissing noise
- ADI case study 137 | leak location | pipework feeding the teacher desk tap, buried in concrete
- ADI case study 137 | repair | teacher desk tap supply capped with a 15mm compression fitting stop end cap
- ADI case study 137 | outcome | capped supply held 3.0 bar for 30 minutes with no pressure drop
- ADI case study 137 | outcome | teacher desk tap not currently supplied with water
- ADI case study 137 | recommendation | make the classroom teacher aware the desk tap has no water supply

## ADI Leak Detection case study 136: internal cold mains leak in Pontefract (WF8 1)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal cold mains leak in Pontefract, West Yorkshire (WF8 1), using acoustic correlation, thermal imaging, tracer gas, a damp meter, an endoscope camera, pressure testing and a borescope. Leak location: 22mm end cap on capped off pipework. Work done: 22mm end cap replaced with a new one. Outcome: pressure held at 3.4 bar for 20 minutes after the repair.

- ADI case study 136 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 136 | town | Pontefract
- ADI case study 136 | postcode sector | WF8 1
- ADI case study 136 | county | West Yorkshire
- ADI case study 136 | country | England
- ADI case study 136 | leak type | Internal cold mains leak
- ADI case study 136 | service | Water Mains Leak Detection
- ADI case study 136 | service | Internal Leak Detection
- ADI case study 136 | engineer | Matthew Barron
- ADI case study 136 | detection method | Acoustic Correlation
- ADI case study 136 | detection method | Thermal Imaging
- ADI case study 136 | detection method | Tracer Gas
- ADI case study 136 | detection method | Damp Meter
- ADI case study 136 | detection method | Endoscope Camera
- ADI case study 136 | detection method | Pressure Testing
- ADI case study 136 | detection method | Borescope
- ADI case study 136 | symptom | wet carpet and signs of water damage in the bedroom cupboard
- ADI case study 136 | system affected | internal cold feed
- ADI case study 136 | test result | internal cold feed dropped from 3.4 bar to 2.2 bar in 15 minutes
- ADI case study 136 | test result | tracer gas detected in the bedroom corner by the cupboard
- ADI case study 136 | test result | signs of water inside the cupboard wall cavity
- ADI case study 136 | leak location | 22mm end cap on capped off pipework
- ADI case study 136 | leak location | inside the wall cavity shared by the bathroom and bedroom
- ADI case study 136 | access made | small hole drilled in the cupboard wall for endoscope inspection
- ADI case study 136 | access made | access made to the wall via the bedroom cupboard and pipework exposed
- ADI case study 136 | repair | 22mm end cap replaced with a new one
- ADI case study 136 | outcome | pressure held at 3.4 bar for 20 minutes after the repair
- ADI case study 136 | recommendation | drying and restoration programme for the bedroom and bathroom
- ADI case study 136 | recommendation | repair the bathroom sink drainage
- ADI case study 136 | recommendation | repair all silicone seals around the shower

## ADI Leak Detection case study 135: internal cold mains leak in Wakefield (WF3 1)

Summary: ADI Leak Detection engineer Matthew Barron investigated an internal cold mains leak in Wakefield, West Yorkshire (WF3 1), using thermal imaging, tracer gas, a damp meter, an endoscope camera and pressure testing. Leak location: push fit tap connector in the ceiling cavity. Work done: new 3/4 to 22mm push fit tap connector, 50cm long, installed.

- ADI case study 135 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 135 | town | Wakefield
- ADI case study 135 | postcode sector | WF3 1
- ADI case study 135 | county | West Yorkshire
- ADI case study 135 | country | England
- ADI case study 135 | leak type | Internal cold mains leak
- ADI case study 135 | service | Water Mains Leak Detection
- ADI case study 135 | service | Internal Leak Detection
- ADI case study 135 | engineer | Matthew Barron
- ADI case study 135 | detection method | Thermal Imaging
- ADI case study 135 | detection method | Tracer Gas
- ADI case study 135 | detection method | Damp Meter
- ADI case study 135 | detection method | Endoscope Camera
- ADI case study 135 | detection method | Pressure Testing
- ADI case study 135 | symptom | water damage and water dripping from the ceiling by the entrance
- ADI case study 135 | test result | internal pressure test failed
- ADI case study 135 | test result | tracer gas detected in the bathroom above the area of water damage
- ADI case study 135 | test result | endoscope camera found water escaping in the ceiling cavity
- ADI case study 135 | leak location | push fit tap connector in the ceiling cavity
- ADI case study 135 | access made | access made to the ceiling by the entrance
- ADI case study 135 | access made | access made to the subfloor in the bathroom above
- ADI case study 135 | repair | new 3/4 to 22mm push fit tap connector, 50cm long, installed
- ADI case study 135 | recommendation | investigate and repair all water damage, as wood rot is present

## ADI Leak Detection case study 133: underground water mains leak in Sheffield (S8 9)

Summary: ADI Leak Detection engineer Matthew Barron investigated an underground water mains leak in Sheffield, South Yorkshire (S8 9), using acoustic correlation, tracer gas, a damp meter, pressure testing and flow metering. Leak location: beneath the concrete pathway just outside the property. Work done: temporary repair completed and hole backfilled with 4 bags of building sand. Outcome: temporary repair in place, lead pipe in poor condition with compromised integrity.

- ADI case study 133 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 133 | town | Sheffield
- ADI case study 133 | postcode sector | S8 9
- ADI case study 133 | county | South Yorkshire
- ADI case study 133 | country | England
- ADI case study 133 | leak type | Underground water mains leak
- ADI case study 133 | service | Water Mains Leak Detection
- ADI case study 133 | service | Underground Leak Detection
- ADI case study 133 | engineer | Matthew Barron
- ADI case study 133 | detection method | Acoustic Correlation
- ADI case study 133 | detection method | Tracer Gas
- ADI case study 133 | detection method | Damp Meter
- ADI case study 133 | detection method | Pressure Testing
- ADI case study 133 | detection method | Flow Metering
- ADI case study 133 | symptom | water supplier gave notice of a leak on the property
- ADI case study 133 | symptom | water damage on the basement walls
- ADI case study 133 | system affected | external water mains pipe
- ADI case study 133 | pipe material | lead
- ADI case study 133 | test result | leak rate of 1 litre every 1 minute 24 seconds at the meter
- ADI case study 133 | test result | pressure test on the external water mains pipe failed
- ADI case study 133 | test result | acoustics detected water movement just outside the property by the pathway
- ADI case study 133 | leak location | beneath the concrete pathway just outside the property
- ADI case study 133 | leak location | multiple leaks on the lead pipe
- ADI case study 133 | access made | concrete pathway just outside the property excavated
- ADI case study 133 | repair | temporary repair completed and hole backfilled with 4 bags of building sand
- ADI case study 133 | repair | universal transition couplers, inserts and 25mm blue MDPE pipe used
- ADI case study 133 | outcome | temporary repair in place, lead pipe in poor condition with compromised integrity
- ADI case study 133 | recommendation | replace the degraded lead water main to prevent further leaks
- ADI case study 133 | recommendation | drying and restoration programme for the basement water damage

## ADI Leak Detection case study 130: internal cold mains leak in Bewbush (RH12 3)

Summary: ADI Leak Detection engineer Kyle Storkey investigated an internal cold mains leak in Bewbush, West Sussex (RH12 3), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: beneath the kitchen tile work and concrete floor. Work done: cold water repair made with a 15mm plastic straight connector and 15mm plastic pipe.

- ADI case study 130 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 130 | town | Bewbush
- ADI case study 130 | postcode sector | RH12 3
- ADI case study 130 | county | West Sussex
- ADI case study 130 | country | England
- ADI case study 130 | leak type | Internal cold mains leak
- ADI case study 130 | service | Water Mains Leak Detection
- ADI case study 130 | service | Internal Leak Detection
- ADI case study 130 | customer type | Commercial Property
- ADI case study 130 | engineer | Kyle Storkey
- ADI case study 130 | detection method | Acoustic Correlation
- ADI case study 130 | detection method | Thermal Imaging
- ADI case study 130 | detection method | Tracer Gas
- ADI case study 130 | detection method | Damp Meter
- ADI case study 130 | detection method | Pressure Testing
- ADI case study 130 | symptom | water pooling on the entrance foyer concrete floor once the carpet was pulled back
- ADI case study 130 | symptom | flaking paintwork on walls of the entrance foyer, downstairs toilet and kitchen
- ADI case study 130 | symptom | discoloured wooden flooring in the office area
- ADI case study 130 | system affected | cold water pipe
- ADI case study 130 | test result | thermal imaging found an anomaly at the kitchen floor
- ADI case study 130 | test result | pressure test on the cold water pipe found a drop in pressure
- ADI case study 130 | test result | large amounts of tracer gas at the entrance foyer and kitchen threshold
- ADI case study 130 | leak location | beneath the kitchen tile work and concrete floor
- ADI case study 130 | access made | access made through the kitchen tile work and concrete floor
- ADI case study 130 | repair | cold water repair made with a 15mm plastic straight connector and 15mm plastic pipe
- ADI case study 130 | recommendation | strip out the water damaged rooms
- ADI case study 130 | recommendation | install a drying programme within the property
- ADI case study 130 | recommendation | reinstatement and redecorating once all areas are dried out

## ADI Leak Detection case study 125: underground water mains leak in Woodley (RG10 0)

Summary: ADI Leak Detection engineer Kyle Storkey investigated an underground water mains leak in Woodley, Berkshire (RG10 0), using acoustic correlation, thermal imaging, tracer gas and a damp meter. Leak location: mains connection where 28mm steel reduces to 15mm copper. Work done: new pipe and connections used for the repair.

- ADI case study 125 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 125 | town | Woodley
- ADI case study 125 | postcode sector | RG10 0
- ADI case study 125 | county | Berkshire
- ADI case study 125 | country | England
- ADI case study 125 | leak type | Underground water mains leak
- ADI case study 125 | service | Water Mains Leak Detection
- ADI case study 125 | service | Underground Leak Detection
- ADI case study 125 | engineer | Kyle Storkey
- ADI case study 125 | detection method | Acoustic Correlation
- ADI case study 125 | detection method | Thermal Imaging
- ADI case study 125 | detection method | Tracer Gas
- ADI case study 125 | detection method | Damp Meter
- ADI case study 125 | symptom | water damage to the kitchen and living room walls
- ADI case study 125 | system affected | mains water supply connection
- ADI case study 125 | pipe material | 28mm steel reducing to 15mm copper
- ADI case study 125 | test result | thermal imaging found saturation areas in the kitchen and living room floor
- ADI case study 125 | test result | acoustics found audible evidence of a leak where the floor was saturated
- ADI case study 125 | test result | large amounts of tracer gas at the kitchen and living room floor
- ADI case study 125 | leak location | mains connection where 28mm steel reduces to 15mm copper
- ADI case study 125 | leak location | beneath the kitchen and living room floor
- ADI case study 125 | access made | floor tiles removed and concrete slab accessed
- ADI case study 125 | repair | new pipe and connections used for the repair
- ADI case study 125 | repair | 15mm fittings and copper pipe used
- ADI case study 125 | recommendation | contact the insurance company about strip out, drying out and redecorating

## ADI Leak Detection case study 123: internal cold mains leak in Cricklade (SN6 7)

Summary: ADI Leak Detection engineer Kyle Storkey investigated an internal cold mains leak in Cricklade, Wiltshire (SN6 7), using acoustic correlation, thermal imaging, tracer gas, a damp meter and pressure testing. Leak location: pinhole on the copper pipe in the utility room. Work done: temporary repair carried out.

- ADI case study 123 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 123 | town | Cricklade
- ADI case study 123 | postcode sector | SN6 7
- ADI case study 123 | county | Wiltshire
- ADI case study 123 | country | England
- ADI case study 123 | leak type | Internal cold mains leak
- ADI case study 123 | service | Water Mains Leak Detection
- ADI case study 123 | service | Internal Leak Detection
- ADI case study 123 | engineer | Kyle Storkey
- ADI case study 123 | detection method | Acoustic Correlation
- ADI case study 123 | detection method | Thermal Imaging
- ADI case study 123 | detection method | Tracer Gas
- ADI case study 123 | detection method | Damp Meter
- ADI case study 123 | detection method | Pressure Testing
- ADI case study 123 | symptom | water damage to the kitchen and utility room walls and floor
- ADI case study 123 | symptom | water pooling on the concrete slab below the utility room lino
- ADI case study 123 | symptom | plumber removed the lino flooring but found no leak source
- ADI case study 123 | system affected | cold water pipework
- ADI case study 123 | pipe material | copper
- ADI case study 123 | test result | acoustics indicated a leak source on the cold water
- ADI case study 123 | test result | pressure test found a drop in pressure
- ADI case study 123 | test result | large amounts of tracer gas at the utility room floor
- ADI case study 123 | leak location | pinhole on the copper pipe in the utility room
- ADI case study 123 | access made | access works in the utility room
- ADI case study 123 | repair | temporary repair carried out
- ADI case study 123 | repair | 15mm plastic fittings and pipe used
- ADI case study 123 | recommendation | permanent repair or reroute of the copper pipework to the utility room
- ADI case study 123 | recommendation | strip out and dry the water damaged areas
- ADI case study 123 | recommendation | reinstatement and redecorating once the areas have dried out

## ADI Leak Detection case study 114: underground water mains leak in Taunton (TA2 6)

Summary: ADI Leak Detection engineer James Bexter investigated an underground water mains leak in Taunton, Somerset (TA2 6), using sectional isolation, pressure testing and acoustic correlation. Leak location: in waterlogged ground about 100 metres from the water meter. Work done: leaking fitting and a section of pipe removed and replaced with new.

- ADI case study 114 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 114 | town | Taunton
- ADI case study 114 | postcode sector | TA2 6
- ADI case study 114 | county | Somerset
- ADI case study 114 | country | England
- ADI case study 114 | leak type | Underground water mains leak
- ADI case study 114 | service | Water Mains Leak Detection
- ADI case study 114 | service | Underground Leak Detection
- ADI case study 114 | engineer | James Bexter
- ADI case study 114 | detection method | Sectional Isolation
- ADI case study 114 | detection method | Pressure Testing
- ADI case study 114 | detection method | Acoustic Correlation
- ADI case study 114 | property type | farm house with farm buildings
- ADI case study 114 | system affected | water mains serving the farm house and taps in the farm buildings
- ADI case study 114 | pipe material | old black alkathene
- ADI case study 114 | test result | meter still showing the leak rate with the farm buildings and house isolated
- ADI case study 114 | test result | air introduced to the line located the leak in the waterlogged area
- ADI case study 114 | test result | incoming pressure about 3.5 bar at the time of testing
- ADI case study 114 | leak location | in waterlogged ground about 100 metres from the water meter
- ADI case study 114 | access made | land stripped back by the owner with an excavator to expose the pipe
- ADI case study 114 | repair | leaking fitting and a section of pipe removed and replaced with new
- ADI case study 114 | recommendation | consider a mains replacement if more leaks appear, as old alkathene goes brittle

## ADI Leak Detection case study 113: underground water mains leak in Falmouth (TR2 4)

Summary: ADI Leak Detection engineer James Bexter investigated an underground water mains leak in Falmouth, Cornwall (TR2 4), using acoustic correlation, tracer gas, an endoscope camera, pressure testing and visual inspection. Leak location: beneath the patio outside the kitchen, about 1.2 metres from the internal stopcock. Work done: faulty 20mm tee fitting removed and replaced with a new fitting.

- ADI case study 113 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 113 | town | Falmouth
- ADI case study 113 | postcode sector | TR2 4
- ADI case study 113 | county | Cornwall
- ADI case study 113 | country | England
- ADI case study 113 | leak type | Underground water mains leak
- ADI case study 113 | service | Water Mains Leak Detection
- ADI case study 113 | service | Underground Leak Detection
- ADI case study 113 | engineer | James Bexter
- ADI case study 113 | detection method | Acoustic Correlation
- ADI case study 113 | detection method | Tracer Gas
- ADI case study 113 | detection method | Endoscope Camera
- ADI case study 113 | detection method | Pressure Testing
- ADI case study 113 | detection method | Visual Inspection
- ADI case study 113 | property type | detached residence
- ADI case study 113 | system affected | external pipework
- ADI case study 113 | test result | steady pressure drop during a 30 minute test at 3 bar
- ADI case study 113 | test result | tracer gas near the kitchen window, across the wall from the internal stopcock
- ADI case study 113 | test result | fitting identified about 1.2 metres along the pipe, confirmed by endoscope camera
- ADI case study 113 | leak location | beneath the patio outside the kitchen, about 1.2 metres from the internal stopcock
- ADI case study 113 | leak location | 20mm tee fitting
- ADI case study 113 | leak cause | tee fitting appears to have failed due to root ingress from nearby vegetation
- ADI case study 113 | access made | area of the patio outside the kitchen excavated
- ADI case study 113 | repair | faulty 20mm tee fitting removed and replaced with a new fitting
- ADI case study 113 | recommendation | contact the buildings insurer about trace and access cover
- ADI case study 113 | recommendation | monitor the area for future signs of damp or water ingress
- ADI case study 113 | recommendation | specialist investigation if structural or damp-proofing concerns arise

## ADI Leak Detection case study 103: internal cold mains leak in Carlisle (CA4 8)

Summary: ADI Leak Detection engineer Hamaad Janjua investigated an internal cold mains leak in Carlisle, Cumbria (CA4 8), using acoustic correlation, thermal imaging, tracer gas, pressure testing, a damp meter and a borescope. Leak location: beneath the concrete floor in the kitchen utility area. Work done: two sections of pipework cut out and replaced with new elbows, fittings and pipework. Outcome: repair retested and all tests passed at the time of the visit.

- ADI case study 103 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 103 | town | Carlisle
- ADI case study 103 | postcode sector | CA4 8
- ADI case study 103 | county | Cumbria
- ADI case study 103 | country | England
- ADI case study 103 | leak type | Internal cold mains leak
- ADI case study 103 | service | Water Mains Leak Detection
- ADI case study 103 | service | Internal Leak Detection
- ADI case study 103 | engineer | Hamaad Janjua
- ADI case study 103 | detection method | Acoustic Correlation
- ADI case study 103 | detection method | Thermal Imaging
- ADI case study 103 | detection method | Tracer Gas
- ADI case study 103 | detection method | Pressure Testing
- ADI case study 103 | detection method | Damp Meter
- ADI case study 103 | detection method | Borescope
- ADI case study 103 | property type | two-storey dwelling
- ADI case study 103 | symptom | mains water leak with no clear internal or external source
- ADI case study 103 | system affected | cold and hot feed pipework
- ADI case study 103 | test result | usage stopped with the supply off at the meter, indicating an internal leak
- ADI case study 103 | test result | internal mains failed the pressure test
- ADI case study 103 | test result | positive gas, high moisture and positive acoustic results in the kitchen utility area
- ADI case study 103 | leak location | beneath the concrete floor in the kitchen utility area
- ADI case study 103 | access made | concrete floor excavated to expose the leaking pipework
- ADI case study 103 | access made | washing machine power cable cut so it could be moved
- ADI case study 103 | repair | two sections of pipework cut out and replaced with new elbows, fittings and pipework
- ADI case study 103 | repair | service valve installed as there were no other hot or cold isolation points
- ADI case study 103 | outcome | repair retested and all tests passed at the time of the visit
- ADI case study 103 | outcome | excavated section not to be reinstated in concrete, with a board over it
- ADI case study 103 | recommendation | do not rebury the pipework in concrete so the service valves stay accessible

## ADI Leak Detection case study 102: internal cold mains leak in Attleborough (NR17 1)

Summary: ADI Leak Detection engineer Grant Corney investigated an internal cold mains leak in Attleborough, Norfolk (NR17 1), using thermal imaging, tracer gas, a damp meter, pressure testing and visual inspection. Leak location: cold supply pipe beneath the bathroom concrete floor where it rises. Work done: leaking pipework cut out and repaired with plastic push fit, not a permanent repair. Outcome: pressure held after the repair with no further leaks.

- ADI case study 102 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 102 | town | Attleborough
- ADI case study 102 | postcode sector | NR17 1
- ADI case study 102 | county | Norfolk
- ADI case study 102 | country | England
- ADI case study 102 | leak type | Internal cold mains leak
- ADI case study 102 | service | Water Mains Leak Detection
- ADI case study 102 | service | Internal Leak Detection
- ADI case study 102 | engineer | Grant Corney
- ADI case study 102 | detection method | Thermal Imaging
- ADI case study 102 | detection method | Tracer Gas
- ADI case study 102 | detection method | Damp Meter
- ADI case study 102 | detection method | Pressure Testing
- ADI case study 102 | detection method | Visual Inspection
- ADI case study 102 | symptom | water damage on the utility concrete floor next to the bathroom
- ADI case study 102 | symptom | leak noise heard between the sink and bathroom
- ADI case study 102 | system affected | cold supply under the concrete floor feeding the bathroom and washing machine
- ADI case study 102 | test result | cold supply pressure dropped from 2 bar to 0 within five minutes
- ADI case study 102 | test result | thermal camera cold patch where the cold supply comes up through the concrete floor
- ADI case study 102 | test result | tracer gas readings behind boxing in the bathroom where the cold supply comes up
- ADI case study 102 | leak location | cold supply pipe beneath the bathroom concrete floor where it rises
- ADI case study 102 | leak cause | hole in unprotected pipework in very poor condition
- ADI case study 102 | access made | area dug out to expose the cold supply
- ADI case study 102 | repair | leaking pipework cut out and repaired with plastic push fit, not a permanent repair
- ADI case study 102 | repair | 15mm plastic pipe and two push fit fittings used
- ADI case study 102 | outcome | pressure held after the repair with no further leaks
- ADI case study 102 | recommendation | bypass the cold supply from the kitchen to the bathroom above ground behind the units

## ADI Leak Detection case study 95: underground water mains leak in Kensington (W10 4)

Summary: ADI Leak Detection engineer Grant Corney investigated an underground water mains leak in Kensington, Greater London (W10 4), using acoustic correlation, tracer gas, pressure testing and acoustic listening. Leak location: underneath the concrete step just outside the front door. Work done: leaking fitting taken out and replaced with a new one. Outcome: pressure held and meter completely stationary after the repair.

- ADI case study 95 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 95 | town | Kensington
- ADI case study 95 | postcode sector | W10 4
- ADI case study 95 | county | Greater London
- ADI case study 95 | country | England
- ADI case study 95 | leak type | Underground water mains leak
- ADI case study 95 | service | Water Mains Leak Detection
- ADI case study 95 | service | Underground Leak Detection
- ADI case study 95 | engineer | Grant Corney
- ADI case study 95 | detection method | Acoustic Correlation
- ADI case study 95 | detection method | Tracer Gas
- ADI case study 95 | detection method | Pressure Testing
- ADI case study 95 | detection method | Acoustic Listening
- ADI case study 95 | symptom | water meter showing roughly 1 litre every 5 minutes
- ADI case study 95 | system affected | incoming mains supply
- ADI case study 95 | test result | incoming mains pressure dropped from 2 bar to 0 bar within 5 minutes
- ADI case study 95 | test result | tracer gas readings around the inside of the front door area
- ADI case study 95 | test result | leak noise louder a little further under the concrete step outside the front door
- ADI case study 95 | leak location | underneath the concrete step just outside the front door
- ADI case study 95 | leak location | leaking 32mm fitting beneath the tile and concrete
- ADI case study 95 | access made | foot mat moved, skirting removed and floor panel lifted at the front door
- ADI case study 95 | access made | tile broken and concrete dug through to reach the leak
- ADI case study 95 | repair | leaking fitting taken out and replaced with a new one
- ADI case study 95 | repair | 32mm and 25mm fittings with 32mm pipework used
- ADI case study 95 | outcome | pressure held and meter completely stationary after the repair
- ADI case study 95 | outcome | concrete step still to be made good on a later visit
- ADI case study 95 | recommendation | change all fittings to Philmac 35mm to 22mm copper fittings while the area is open

## ADI Leak Detection case study 93: underground water mains leak in Haverhill (CO10 7)

Summary: ADI Leak Detection engineer Grant Corney investigated an underground water mains leak in Haverhill, Suffolk (CO10 7), using pressure testing, tracer gas, thermal imaging, a damp meter and visual inspection. Leak location: joint under the stopcock onto the black plastic pipe. Work done: nut on the leaking joint tightened. Outcome: joint bone dry with no further leaks and the meter stopped moving.

- ADI case study 93 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 93 | town | Haverhill
- ADI case study 93 | postcode sector | CO10 7
- ADI case study 93 | county | Suffolk
- ADI case study 93 | country | England
- ADI case study 93 | leak type | Underground water mains leak
- ADI case study 93 | service | Water Mains Leak Detection
- ADI case study 93 | service | Underground Leak Detection
- ADI case study 93 | engineer | Grant Corney
- ADI case study 93 | detection method | Pressure Testing
- ADI case study 93 | detection method | Tracer Gas
- ADI case study 93 | detection method | Thermal Imaging
- ADI case study 93 | detection method | Damp Meter
- ADI case study 93 | detection method | Visual Inspection
- ADI case study 93 | symptom | meter still turning with the internal stop cock under the kitchen sink turned off
- ADI case study 93 | symptom | higher water bills
- ADI case study 93 | system affected | incoming water mains
- ADI case study 93 | pipe material | black plastic
- ADI case study 93 | test result | pressure test under the kitchen sink showed pressure dropping on the incoming mains
- ADI case study 93 | test result | tracer gas hissing heard from underneath the kitchen units
- ADI case study 93 | test result | continuous stream of water running down the pipe inside the duct with the meter on
- ADI case study 93 | leak location | joint under the stopcock onto the black plastic pipe
- ADI case study 93 | leak cause | likely accidental damage from the stopcock being knocked under the kitchen units
- ADI case study 93 | access made | kickboard removed from the kitchen units
- ADI case study 93 | repair | nut on the leaking joint tightened
- ADI case study 93 | outcome | joint bone dry with no further leaks and the meter stopped moving
- ADI case study 93 | recommendation | replace the stopcock with a lever valve positioned higher so it is not knocked

## ADI Leak Detection case study 89: underground water mains leak in Oxford (OX3 0)

Summary: ADI Leak Detection engineer Gabor Weber investigated an underground water mains leak in Oxford, Oxfordshire (OX3 0), using pressure testing, acoustic correlation and visual inspection. Leak location: in the ground beneath the concrete driveway. Work done: damaged section replaced using UTC couplings and 25mm MDPE pipe. Outcome: pipework passed a retest for 40 minutes at 6 bar.

- ADI case study 89 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 89 | town | Oxford
- ADI case study 89 | postcode sector | OX3 0
- ADI case study 89 | county | Oxfordshire
- ADI case study 89 | country | England
- ADI case study 89 | leak type | Underground water mains leak
- ADI case study 89 | service | Water Mains Leak Detection
- ADI case study 89 | service | Underground Leak Detection
- ADI case study 89 | engineer | Gabor Weber
- ADI case study 89 | detection method | Pressure Testing
- ADI case study 89 | detection method | Acoustic Correlation
- ADI case study 89 | detection method | Visual Inspection
- ADI case study 89 | symptom | water meter continuously spinning with the internal stopcock isolated
- ADI case study 89 | system affected | external main pipework
- ADI case study 89 | pipe material | lead
- ADI case study 89 | test result | internal cold feed pipework passed its pressure test
- ADI case study 89 | test result | external main pipework failed its pressure test
- ADI case study 89 | test result | acoustic anomaly on the driveway
- ADI case study 89 | leak location | in the ground beneath the concrete driveway
- ADI case study 89 | access made | concrete driveway and underlying ground exposed
- ADI case study 89 | repair | damaged section replaced using UTC couplings and 25mm MDPE pipe
- ADI case study 89 | outcome | pipework passed a retest for 40 minutes at 6 bar
- ADI case study 89 | recommendation | send a copy of the report to the water board
- ADI case study 89 | recommendation | consider replacing the remaining old lead pipework due to its age and material

## ADI Leak Detection case study 84: internal cold mains leak in Oxford (OX14 4)

Summary: ADI Leak Detection engineer Gabor Weber investigated an internal cold mains leak in Oxford, Oxfordshire (OX14 4), using thermal imaging, a damp meter, tracer gas, pressure testing, acoustic correlation and visual inspection. Leak location: under the bathroom floor. Work done: leaking section of 15mm copper pipe replaced with new copper pipe and fittings. Outcome: retest at 4 bar for 20 minutes passed with no further leaks.

- ADI case study 84 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 84 | town | Oxford
- ADI case study 84 | postcode sector | OX14 4
- ADI case study 84 | county | Oxfordshire
- ADI case study 84 | country | England
- ADI case study 84 | leak type | Internal cold mains leak
- ADI case study 84 | service | Water Mains Leak Detection
- ADI case study 84 | service | Internal Leak Detection
- ADI case study 84 | engineer | Gabor Weber
- ADI case study 84 | detection method | Thermal Imaging
- ADI case study 84 | detection method | Damp Meter
- ADI case study 84 | detection method | Tracer Gas
- ADI case study 84 | detection method | Pressure Testing
- ADI case study 84 | detection method | Acoustic Correlation
- ADI case study 84 | detection method | Visual Inspection
- ADI case study 84 | property type | house
- ADI case study 84 | symptom | damp on the corridor wooden floor
- ADI case study 84 | system affected | cold feed pipework
- ADI case study 84 | pipe material | copper
- ADI case study 84 | test result | high damp readings on the corridor thermal anomaly and the bathroom floor
- ADI case study 84 | test result | tracer gas in the drained heating system not detected at the damp area
- ADI case study 84 | test result | hot feed and heating system held pressure but the cold feed failed
- ADI case study 84 | leak location | under the bathroom floor
- ADI case study 84 | access made | bathroom tiles and concrete floor exposed
- ADI case study 84 | repair | leaking section of 15mm copper pipe replaced with new copper pipe and fittings
- ADI case study 84 | outcome | retest at 4 bar for 20 minutes passed with no further leaks
- ADI case study 84 | recommendation | replace the pipework, about 40 years old and now leaking for a second time

## ADI Leak Detection case study 83: internal cold mains leak in Neston (SN13 8)

Summary: ADI Leak Detection engineer Gabor Weber investigated an internal cold mains leak in Neston, Wiltshire (SN13 8), using acoustic correlation, acoustic listening, a damp meter, pressure testing, an endoscope camera and visual inspection. Leak location: under the corridor floor tiles. Work done: leaking section of 15mm copper pipe replaced with copper pipe and fittings. Outcome: no further leaks on the pipework at the time of testing.

- ADI case study 83 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 83 | town | Neston
- ADI case study 83 | postcode sector | SN13 8
- ADI case study 83 | county | Wiltshire
- ADI case study 83 | country | England
- ADI case study 83 | leak type | Internal cold mains leak
- ADI case study 83 | service | Water Mains Leak Detection
- ADI case study 83 | service | Internal Leak Detection
- ADI case study 83 | engineer | Gabor Weber
- ADI case study 83 | detection method | Acoustic Correlation
- ADI case study 83 | detection method | Acoustic Listening
- ADI case study 83 | detection method | Damp Meter
- ADI case study 83 | detection method | Pressure Testing
- ADI case study 83 | detection method | Endoscope Camera
- ADI case study 83 | detection method | Visual Inspection
- ADI case study 83 | property type | house
- ADI case study 83 | symptom | noise from the hot water cylinder
- ADI case study 83 | system affected | hot feed pipework
- ADI case study 83 | pipe material | copper
- ADI case study 83 | test result | pressure test on the hot feed pipework failed
- ADI case study 83 | test result | retest after the first repair failed, indicating a second leak
- ADI case study 83 | test result | final retest at 3 bar for 20 minutes passed
- ADI case study 83 | leak location | under the corridor floor tiles
- ADI case study 83 | leak location | under the bathroom floor
- ADI case study 83 | access made | corridor floor tiles and screed exposed
- ADI case study 83 | access made | bathroom floor tiles and screed exposed
- ADI case study 83 | repair | leaking section of 15mm copper pipe replaced with copper pipe and fittings
- ADI case study 83 | repair | leaking 22mm copper soldered tee section replaced with new copper pipe and fittings
- ADI case study 83 | outcome | no further leaks on the pipework at the time of testing
- ADI case study 83 | recommendation | leave the exposed floor open until it dries out
- ADI case study 83 | recommendation | fix the internal main stop cock after the water board locates the external one

## ADI Leak Detection case study 82: internal cold mains leak in Lowestoft (NR32 3)

Summary: ADI Leak Detection engineer Ferenc Gulyas investigated an internal cold mains leak in Lowestoft, Suffolk (NR32 3), using visual inspection, pressure testing, tracer gas, acoustic correlation and an endoscope camera. Leak location: under the kitchen floor. Work done: leaking part replaced with Philmac fittings. Outcome: retest after the repair passed with no leak indicated.

- ADI case study 82 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 82 | town | Lowestoft
- ADI case study 82 | postcode sector | NR32 3
- ADI case study 82 | county | Suffolk
- ADI case study 82 | country | England
- ADI case study 82 | leak type | Internal cold mains leak
- ADI case study 82 | service | Water Mains Leak Detection
- ADI case study 82 | service | Internal Leak Detection
- ADI case study 82 | engineer | Ferenc Gulyas
- ADI case study 82 | detection method | Visual Inspection
- ADI case study 82 | detection method | Pressure Testing
- ADI case study 82 | detection method | Tracer Gas
- ADI case study 82 | detection method | Acoustic Correlation
- ADI case study 82 | detection method | Endoscope Camera
- ADI case study 82 | symptom | high water bills without any water being used
- ADI case study 82 | system affected | internal cold water pipework
- ADI case study 82 | pipe material | MDPE
- ADI case study 82 | test result | pressure test on the internal cold water pipework indicated a leak
- ADI case study 82 | test result | tracer gas detector identified a possible leak in the middle of the kitchen
- ADI case study 82 | test result | water pressure of 50psi
- ADI case study 82 | leak location | under the kitchen floor
- ADI case study 82 | leak location | on the 25mm MDPE connection
- ADI case study 82 | access made | laminate and chipboard wood floor exposed
- ADI case study 82 | repair | leaking part replaced with Philmac fittings
- ADI case study 82 | repair | 25mm to 15mm reducer, push fit coupling, 15mm copper pipework and pipe insulation fitted
- ADI case study 82 | outcome | retest after the repair passed with no leak indicated
- ADI case study 82 | recommendation | contact a claims solutions company

## ADI Leak Detection case study 80: internal cold mains leak in Hertford (SG11 1)

Summary: ADI Leak Detection engineer Ferenc Gulyas investigated an internal cold mains leak in Hertford, Hertfordshire (SG11 1), using acoustic correlation, thermal imaging, tracer gas, a damp meter, pressure testing and visual inspection. Leak location: 15mm copper pipework under the floor in front of the kitchen sink unit. Work done: leaking part replaced with new copper pipework. Outcome: retest on the hard water cold feed passed indicating no further leaks.

- ADI case study 80 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 80 | town | Hertford
- ADI case study 80 | postcode sector | SG11 1
- ADI case study 80 | county | Hertfordshire
- ADI case study 80 | country | England
- ADI case study 80 | leak type | Internal cold mains leak
- ADI case study 80 | service | Water Mains Leak Detection
- ADI case study 80 | service | Internal Leak Detection
- ADI case study 80 | engineer | Ferenc Gulyas
- ADI case study 80 | detection method | Acoustic Correlation
- ADI case study 80 | detection method | Thermal Imaging
- ADI case study 80 | detection method | Tracer Gas
- ADI case study 80 | detection method | Damp Meter
- ADI case study 80 | detection method | Pressure Testing
- ADI case study 80 | detection method | Visual Inspection
- ADI case study 80 | symptom | massive water damage on the kitchen skirting next to the fridge
- ADI case study 80 | symptom | leak noise heard from the kitchen sink unit
- ADI case study 80 | symptom | heating system losing a little pressure once a week
- ADI case study 80 | system affected | hard water drinking supply pipework coming directly from the street
- ADI case study 80 | system affected | pipework feeding the fridge freezer
- ADI case study 80 | pipe material | copper
- ADI case study 80 | test result | hot feed system passed its pressure test
- ADI case study 80 | test result | internal cold feed pipework passed its pressure test
- ADI case study 80 | test result | hard water system failed its pressure test, indicating a leak
- ADI case study 80 | leak location | 15mm copper pipework under the floor in front of the kitchen sink unit
- ADI case study 80 | leak location | automatic air vent in the boiler room
- ADI case study 80 | access made | bottom board of the unit next to the sink cut and concrete exposed
- ADI case study 80 | access made | tiling and concrete floor exposed in front of the kitchen sink unit
- ADI case study 80 | repair | leaking part replaced with new copper pipework
- ADI case study 80 | repair | both automatic air vents replaced with an isolation valve fitted underneath
- ADI case study 80 | repair | dripping 15mm lever ball valve on the outside tap pipework replaced
- ADI case study 80 | outcome | retest on the hard water cold feed passed indicating no further leaks
- ADI case study 80 | outcome | water pressure restored to working order everywhere
- ADI case study 80 | recommendation | contact the insurer
- ADI case study 80 | recommendation | keep using the dehumidifier to dry out